Nice graphical calculator.
It has all the functinalities of a scientific calculator. Good User Interface with buttons. User can use mouse too to perform the required operation.

So Do see it
Thanks

[sourcecode language=’c’]

/*******************************************************
* MYCPLUS Sample Code – http://www.mycplus.com *
* *
* This code is made available as a service to our *
* visitors and is provided strictly for the *
* purpose of illustration. *
* *
* Please direct all inquiries to saqib at mycplus.com *
*******************************************************/

//Muhammad Saqib
//Please change BGI directory accouding to your TC Directory
//By default it is "E:\tc\bgi"

#include
#include
#include
#include
#include
#include
#include
#include
#include

float *mem;
int X=0, Y=0;
int row=17,col=5;
char dummy;
char flag=’d’,flagp=’0′;
char bflag=’u’,bflagp=’u’;
int mflag=0;
char ch,ch1,ch2;
int sflag=0;
int midx,midy;
# define UNCLICKED 0
# define CLICKED 1
# define PI 3.14159

char str1[]={"Asif Sajwani Roll# CIS 34"};
char str2[]={"Shaikh Adeel Roll# CIS 50"};

void typeit (int x,int y,int spacing,char string[])
{
char temp[2];
for (int i=0;i {
delay(100);
temp[0]=string[i];
temp[1]=’\0′;
outtextxy(x+(i+1)*spacing,y,temp);
}//endfor

}
front()
{
int x,y,h;
for(x=0;x<=100;x++)
{
settextjustify(CENTER_TEXT,CENTER_TEXT);
setcolor(1);
settextstyle(1,0,4);
setusercharsize(x,6,x,3);
setcolor(14);
moveto(310,135);
outtext("..");
setcolor(6);
moveto(310,130);
outtext("I I");
if(x<50)
delay(30);
else
delay(20);
}
for(y=0;y<=100;y++)
{
setcolor(0);
settextstyle(1,0,4);
setusercharsize(y,6,y,3);
moveto(310,135);
outtext("..");
moveto(310,130);
outtext("I I");
if(y>20)
{
settextstyle(7,0,3);
setusercharsize(y-20,35,y-20,30);
setcolor(9);
outtext("CALCULATER");
setcolor(2);
outtext("___________");
delay(15);
if(y<100)
{
settextstyle(7,0,3);
setusercharsize(y-20,35,y-20,30);
setcolor(0);
outtext("CALCULATER");
}
}
}
//delay(1000);
settextstyle(3,0,2);
delay(50);
outtextxy(midx-200,midy,"Group Members:-");
//x=10,y=10;
setcolor(6);
settextstyle(4,0,4);
typeit(midx-200,midy+50,15,str1);
typeit(midx-200,midy+75,15,str2);
getch();
//closegraph();
}

char input();
double add(double,double,char);
double angle_conv(double);
void basecng(double,double);

//***********************************************************
// *
// THIS FUNCTION DRAWS THE BUTTONS OF THE CALCULATER *
// *
//***********************************************************

void button_3d(int x1,int y1,int x2,int y2,int check,char* text,int color)
{
int up,low;
setfillstyle(1,7);
bar(x1,y1,x2,y2);
if(check==0) //Unclicked
up=15,low=8;
else
up=8,low=15; //Clicked
setcolor(low);
line(x2,y1,x2,y2);
line(x2-1,y1,x2-1,y2);
line(x1,y2,x2,y2);
line(x1+1,y2-1,2,y2-1);

setcolor(up);
line(x1,y1,x2,y1);
line(x1+1,y1+1,2-1,y1+1);
line(x1,y1,x1,y2);
line(x1+1,y1+1,1+1,y2-1);
setcolor(color);

settextjustify(CENTER_TEXT,CENTER_TEXT);
outtextxy(x1+(x2 – x1)/2,(y1+(y2 – y1)/2)-2, text);

}
//********************************************************************
// *
// This function makes the opening screen *
// *
//********************************************************************

void frontpage(void)
{
int mx, my;

mx = (getmaxx() / 2);
my = (getmaxy() / 2);

//SET baqckground color
setfillstyle(9, 1);
bar(0,0,getmaxx(),getmaxy());

//DRAW a bar, and make it look like a 3d bar
setfillstyle(1,7);
bar(50,20,600,400);

//DRAW lines for the top and left side
setcolor(15);
line(50,20,600,20);
line(51,21,599,21);
line(50,20,50,400);
line(51,21,51,399);

//DRAW lines for the bottom and right side
setcolor(8);
line(600,20,600,400);
line(599,21,599,400);
line(50,400,600,400);
line(51,399,600,399);

//DRAW two 3D bars for the left and right side

setfillstyle(9,8);
bar(70,40,100,380);
//getch();
bar(545,40,575,380);
setcolor(8);
rectangle(70,40,100,380);
rectangle(545,40,575,380);
setcolor(15);
line(100,40,100,380);
line(70,380,100,380);
line(575,40,575,380);
line(545,380,575,380);

//DRAW two 3D divider lines on both sides
setcolor(8);
line(110, 40, 110, 380);
line(535, 40, 535, 380);
setcolor(15);
line(111, 40, 111, 380);
line(536, 40, 536, 380);

//PRINT 3D text CALENDAR 2002
settextstyle(1, 0, 4);
settextjustify(1,1);
setcolor(15);
outtextxy(mx+2, my – 46, "MY CALCULATER");
setcolor(7);
outtextxy(mx + 1, my – 45, "MY CALCULATER");
setcolor(8);
outtextxy(mx + 2, my – 44, "MY CALCULATER");

//PRINT 3D text 2002
setcolor(15);
outtextxy(mx, my + 10, "2002");
setcolor(7);
outtextxy(mx + 1, my + 11, "2002");
setcolor(8);
outtextxy(mx + 2, my + 12, "2002");

//PRINT copyright notice
settextstyle(2, 0, 5);
setcolor(1);
outtextxy(mx + 1, my + 85, "Copyright 2002 by ASAS Creations");

getch(); //PAUSE for a while
}

//********************************************************************
// *
// This function makes the claculating screen *
// *
//********************************************************************

void screen(int x1, int y1, int x2, int y2)
{
setlinestyle(0,0,1);
setfillstyle(SOLID_FILL, 8);
bar(x1, y1, x2, y2);
setfillstyle(SOLID_FILL, BLACK);
bar(x1+1, y1+1, x2-1, y2-1);

settextjustify(CENTER_TEXT, CENTER_TEXT);
setcolor(15);
line(x1+1, y1+1, x1+1, y2-1);
line(x1+1, y1+1, x2-1, y1+1);
line(x1+2, y1+2, x1+2, y2-2);
line(x1+2, y1+2, x2-2, y1+2);
setcolor(8);
line(x1+1, y2-1, x2-1, y2-1);
line(x2-1, y1+1, x2-1, y2-1);
line(x1+2, y2-2, x2-2, y2-2);
line(x2-2, y1+2, x2-2, y2-2);

}

//***********************************************************************
// *
// Mouse Related Functions *
// *
//***********************************************************************

void init_mouse()
{
union REGS iregs, oregs;

iregs.x.ax = 0;
int86 (0x33, &iregs, &oregs);

if (oregs.x.ax == 0)
{
cleardevice();
printf("mouse not installed\n");
getch();
exit(1);
}
iregs.x.ax = 1;
int86 (0x33, &iregs ,&oregs);
}
//*************************************************************

void mouse()
{
int button,x1,y1;
union REGS iregs, oregs;

iregs.x.ax = 3;
int86 (0x33, &iregs ,&oregs);

button = oregs.x.bx & 3;
x1 = oregs.x.cx;
y1 = oregs.x.dx;

if(oregs.x.bx & 1)
{
X = x1 ; Y = y1;
}

if(button == 3)
exit(0);
}

//*************************************************************

void hide_mouse()
{
union REGS ioRegs;
ioRegs.x.ax=2;
int86(0x33,&ioRegs,&ioRegs);
}

//*************************************************************
void show_mouse()
{
union REGS ioRegs;
ioRegs.x.ax=1;
int86(0x33,&ioRegs,&ioRegs);
}

/*************************************************************/
void remove_mouse()
{
union REGS ioRegs;
ioRegs.x.ax=0;
int86(0x33,&ioRegs,&ioRegs);
}

//************************************************************************
// *
// THIS FUNCTION DRAWS THE CALCULATER ON THE SCREEN *
// *
//************************************************************************
structure()
{
init_mouse();
setbkcolor(0);
cleardevice();
hide_mouse();
//**********************************************************
// Buttons Making

front();
frontpage();
settextstyle(2,0,4);
button_3d(50,20,600,400,UNCLICKED,"",1); // main box
screen(100,50,545,120); // screen

setfillstyle(1,8);
bar(52,22,598,42);
button_3d(575,23,595,40,UNCLICKED,"x",0);
setcolor(0);
outtextxy(120,30,"Calculater v1.0");
button_3d(108,140,208,160,UNCLICKED,"DEC",15); // box of decimal
button_3d(218,140,318,160,UNCLICKED,"OCT",0); // box of octal
button_3d(328,140,428,160,UNCLICKED,"HEX",0); // box of hexal
button_3d(438,140,538,160,UNCLICKED,"BIN",0); // box of binary

button_3d(350,205,380,225,UNCLICKED,"7",0); // Box Of 7
button_3d(390,205,420,225,UNCLICKED,"8",0); // Box Of 8
button_3d(430,205,460,225,UNCLICKED,"9",0); // Box Of 9

button_3d(350,230,380,250,UNCLICKED,"4",0); // Box Of 4
button_3d(390,230,420,250,UNCLICKED,"5",0); // Box Of 5
button_3d(430,230,460,250,UNCLICKED,"6",0); // Box Of 6

button_3d(480,230,510,250,UNCLICKED,"*",0); // Box Of *
button_3d(515,230,545,250,UNCLICKED,"/",0); // Box Of \
button_3d(480,205,510,225,UNCLICKED,"AC",4); //Box Of AllClear (AC)
button_3d(515,205,545,225,UNCLICKED,"CE",4); //Box Of Clear (C)

button_3d(350,255,380,275,UNCLICKED,"1",0); // Box Of 1
button_3d(390,255,420,275,UNCLICKED,"2",0); // Box Of 2
button_3d(430,255,460,275,UNCLICKED,"3",0); // Box Of 3

button_3d(350,280,380,300,UNCLICKED,"0",0); // Box Of Zero (0)
button_3d(390,280,420,300,UNCLICKED,".",0); // Box Of Period (.)
button_3d(430,280,460,300,UNCLICKED,"pi",0); // Box Of PhiFunction

button_3d(480,255,510,275,UNCLICKED,"-",0); // Box Of –
button_3d(515,255,545,275,UNCLICKED,"+",0); // Box Of +
button_3d(350,305,460,325,UNCLICKED,"=",0); // Box Of Equality
button_3d(480,305,545,325,UNCLICKED,"shift",BLUE); // Box Of shift

button_3d(480,280,510,300,UNCLICKED,"sqrt",0); //Box of x^n
button_3d(515,280,545,300,UNCLICKED,"inv",0); //box of 1/x

button_3d(100,205,150,230,UNCLICKED,"Sin",0); // Box OfSin Function
button_3d(160,205,210,230,UNCLICKED,"Cos",0); // Box Of CosFunction
button_3d(220,205,270,230,UNCLICKED,"Tan",0); // Box Of Tan Function

button_3d(100,250,150,275,UNCLICKED,"sin^-1",0); // Box Of sin^-1
button_3d(160,250,210,275,UNCLICKED,"cos^-1",0); // Box Of cos^-1
button_3d(220,250,270,275,UNCLICKED,"tan^-1",0); // Box Of tan^-1

button_3d(100,300,150,325,UNCLICKED,"ln",0); // Box Of ln
settextjustify(CENTER_TEXT,CENTER_TEXT);
setcolor(BLUE);
settextstyle(2,0,4);
outtextxy(125,290,"e");
outtextxy(185,290,"10^x");
outtextxy(245,290,"x^3");
button_3d(160,300,210,325,UNCLICKED,"log",0); // Box Of log
button_3d(220,300,270,325,UNCLICKED,"x^2",0); // Box Of x^2

button_3d(100,350,150,370,UNCLICKED,"deg",15);
button_3d(160,350,210,370,UNCLICKED,"rad",0);
button_3d(220,350,270,370,UNCLICKED,"gra",0);
button_3d(480,350,545,370,UNCLICKED,"Off",4);

button_3d(350,350,380,370,UNCLICKED,"M+",0);
button_3d(390,350,420,370,UNCLICKED,"M-",0);
button_3d(430,350,460,370,UNCLICKED,"MR",0);

}
//********************************************************
// *
// Main starts *
// *
//********************************************************
void main()
{
clrscr();

double y=0,z=0,pnt,pnt1=0,x=0,r=0;

int gdriver = DETECT, gmode, errorcode;
int i;
initgraph(&gdriver, &gmode, "e:\\tc\\bgi");
midx=getmaxx()/2;midy=getmaxy()/2;
structure();
gotoxy(row,col);
printf("\t\t\t\t\t");
gotoxy(row,col);
printf("0");
mem=(float*)malloc(y*sizeof(float));
while( ch!=27&&ch1!=27) //While Escape is not pressed
{ //and if base is not 10
pnt1=0;//no doubleing point entered Yet
ch2=’0′;
// for(int a=0;ch!=27;a++)//a indicates whether a no. has been entered or not
while(ch2!=27)
//a=0 means that no no. has been entered yet
{
if(bflagp!=’u’)
{
//gotoxy(row,col);
dummy=input();
if(dummy!=’o’)
{
gotoxy(row,col);
printf("The trail version does not support this feature");
input();
gotoxy(row,col);
printf("\t\t\t\t\t\t");
// ch=’0′;
}
y=0;z=0;ch=’0′;
gotoxy(row,col);
printf("\t\t\t\t\t\t");
gotoxy(row,col);
printf("0");

// bflagp=’u’;
}

ch=input();
if(ch==’>’||ch=='<‘||ch==’?’)
{ sflag=0;
if(ch==’>’) //M+
*mem+=y;
if(ch=='<‘) //M-
*mem-=y;
if(ch==’?’) //MR
{
y=*mem;
gotoxy(row,col);
printf("\t\t\t\t\t\t");
gotoxy(row,col);
printf("%g",y);
}
if(*mem==0)
mflag=0;
if(*mem!=0)
mflag=1;
}
if(mflag==0)
{
gotoxy(row,7);

printf(" ");

}
if(mflag!=0)
{
gotoxy(row,7);

printf("M");
}
gotoxy(row,col);

if(ch==’a’)
{ sflag=0;
y=0;
gotoxy(row,col);
printf("\t\t\t\t\t");
gotoxy(row,col);
printf("0");
}

if(ch==’o’)
//for clearing the screen of the calculater
{
sflag=0;
y=0;z=0;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("0");
gotoxy(row,col);
break;
}

if(ch==’q’)
{
sflag=0;
y=sqrt(y);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",y);
}
if(ch==’m’)
{
sflag=0;
y=1/y;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",y);
}
if(ch==’+’||ch==’-‘||ch==’/’||ch==’\\’||ch==’=’||ch==’*’)
{
sflag=0;
break;
}
if(ch==’.’) //case for a decimal point
{
sflag=0;
if(pnt1==0) //ie no decimal has been entered yet
{
gotoxy(row,col);
printf("\t\t\t\t ");// double
gotoxy(row,col);
printf("%g.",y);
pnt1=.1; //ie one decimal point no has been entered
continue; //go back to the begining and get the next number
}
else //decimal point has alredy been entered and thus no change in the screen
{
sflag=0;
continue; //go back to the begining
}
}//out of the ‘.’ condition

if(pnt1!=0) //ie we have a doubleing point
{ sflag=0;
if(ch<=’9’&&ch>=’0′) //input integer
{
// printf("%c",ch);
x=(double)ch;//type cast the character into double to perforn further operations
x-=48; //since character digit indoubleing -48 gives the corresponding ASCII
x=x*pnt1; //make it a decimal
y=x+y; //add it in result
pnt1*=.1; //shift to the second doubleing point
gotoxy(row,col);
printf("%g",y);
gotoxy(row,col);
continue; //back to the top
}
}
//if no decimal point number then proceed

if(ch<=’9’&&ch>=’0′)
{ sflag=0;
x=(double)ch; //typecast to double
x-=48; //get corresponding ASCII
y=(y*10)+x; //add to right of result
gotoxy(row,col); //go back to start of the calc screen
printf("\t\t\t\t "); //clear the screen
gotoxy(row,col);
printf("%g",y); //print the number
}
if(ch==’u’||ch==’v’||ch==’w’||ch==’x’)
{ sflag=0;
if(bflagp==bflag&&bflag==’u’)
continue;
else
basecng(y,pnt1);
}
if(ch==’d’||ch==’r’||ch==’g’)
{sflag=0;
y=angle_conv(y);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",y);
// gotoxy(row,col);
// printf("%g",y);
// continue;
}
if(ch==’s’||ch==’c’||ch==’t’||ch==’i’||ch==’j’||ch==’k’||ch==’n’||ch==’l’||ch==’p’||ch==’h’)
//ie the user opted for a function
{
if(ch==’s’||ch==’c’||ch==’t’) //sin /cos/tan
{ sflag=0;
if(flag!=’r’)
{
flagp=flag;
flag=’r’;
y=angle_conv(y);
flag=flagp;
}
// gotoxy(row,col);
// printf("%g",y);getch();
switch(ch)
{

case ‘s’: y=sin(y); break;
case ‘c’: y=cos(y); break;
case ‘t’: y=tan(y); break;
}
}
if(ch==’i’||ch==’j’||ch==’k’)
{sflag=0;
if(flag!=’r’)
{
// flagp=flag;
flagp=’r’;
//y=angle_conv(y);
}
switch(ch)
{
case ‘i’: y=asin(y); break;
case ‘j’: y=acos(y); break;
case ‘k’: y=atan(y); break;
}
if(flag!=’r’)
y=angle_conv(y);
}
else if(ch==’n’)
{
if(sflag==1)
{
y=exp(y);
sflag=0;
}
else
y=log(y); //ln
}
else if(ch==’l’)
{
if(sflag==1)
{
y=pow(10,y);
sflag=0;
}
else
y=log10(y); //log
}
else if(ch==’p’)
{
if(sflag==1)
{
y=pow(y,3);
sflag=0;
}
else
y=pow(y,2); //square
}
else if(ch==’h’)
{
sflag=0;
y=PI; //pi
}

gotoxy(row,col);
printf("\t\t\t\t ");//Clear the screen
gotoxy(row,col);
printf("%g",y);
}//else condition

}//out of second condition ie we now have the first no. or function or operater

for(;ch!=27&&ch1!=’=’&&ch!=’=’;)//ie the characters input are not ESCAPE or Equal to

{
pnt1=0;z=0;
if(ch==’o’||ch1==’o’) // For Clear The Screen
{

sflag=0;
y=0;z=0;
gotoxy(row,col);
printf("\t\t\t\t ");
// gotoxy(col,row);
gotoxy(row,col);
printf("0");
gotoxy(row,col);
break;
}
for(;ch1!=27;)
{
gotoxy(row,col);
// printf("%g",z);
// z=0;
ch1=input();

if(ch1==’>’||ch1=='<‘||ch1==’?’)
{
if(ch1==’>’) //M+
*mem+=z;
if(ch1=='<‘) //M-
*mem-=z;
if(ch1==’?’) //MR
{
z=*mem;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",z);
}
if(*mem==0)
mflag=0;
if(*mem!=0)
mflag=1;
}
if(mflag==0)
{
gotoxy(row,7);
printf(" ");
}
if(mflag!=0)
{
gotoxy(row,7);
printf("M");
}
gotoxy(row,col);

if(ch1==’a’)
{
z=0;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("0");
}

if(ch==’o’||ch1==’o’) // For Clear The Screen
{
y=0;z=0;
gotoxy(row,col);
//cout<<" ";
printf("\t\t\t\t ");
gotoxy(row,col);
printf("0");
gotoxy(row,col);
break;
}
if(ch1==’q’)
{
z=sqrt(z);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",z);
}
if(ch1==’m’)
{
z=1/z;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",z);
}

if(ch1==’.’)
{
if(pnt1==0)
{
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
//cout< printf("%g.",z);
pnt1=.1;
continue;
}
else
{
continue;
}
}
if(pnt1!=0)
{
if(ch1<=’9’&&ch1>=’0′)
{
// printf("%c",ch1);
x=(double)ch1;
x-=48;
x=x*pnt1;
z=x+z;
pnt1=pnt1*.1;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",z);
continue;
}
}

if(ch1==’+’||ch1==’-‘||ch1==’*’||ch1==’/’||ch1==’=’)
break;
if(ch1>=’0’&&ch1<=’9′)
{
x=(double)ch1;
x=x-48;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
z=(z*10)+x;
printf("%g",z);
}
if(ch==’u’)
if(ch==’d’||ch==’r’||ch==’g’)
{
z=angle_conv(z);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",z);
// continue;
}
if(ch1==’s’||ch1==’c’||ch1==’t’||ch1==’i’||ch1==’j’||ch1==’k’||ch1==’n’||ch1==’l’||ch1==’p’||ch1==’h’)
//ie the user opted for a function
{
if(ch1==’s’||ch1==’c’||ch1==’t’) //sin
{
if(flag!=’r’)
{
flagp=flag;
flag=’r’;
angle_conv(z);
flag=flagp;
}
switch(ch1)
{
case ‘s’: z=sin(z); break;
case ‘c’: z=cos(z); break;
case ‘t’: z=tan(z); break;
}
}
if(ch1==’i’||ch1==’j’||ch1==’k’)
{
if(flag!=’r’)
{
flagp=’r’;
}
switch(ch1)
{
case ‘i’: z=asin(z); break;
case ‘j’: z=acos(z); break;
case ‘k’: z=atan(z); break;
}
z=angle_conv(z);
}
else if(ch1==’l’)
{
z=log10(z); //log
}
else if(ch1==’p’)
{
z=pow(z,2); //square
}
else if(ch1==’h’)
{
z=PI; //pi
}

gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",z);
gotoxy(row,col);
}
}

if(ch1==’+’||ch1==’-‘||ch1==’=’)
{
y=add(y,z,ch);
if(ch2!=’0′)
{
y=add(r,y,ch2);
ch2=’0′;
}
}
else
{
if(ch==’*’||ch==’/’)
y=add(y,z,ch);
else
{
ch2=ch;
r=y;
y=z;
}
}
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",y);
ch=ch1;
ch1=’0′;
if(ch==’=’||ch1==’=’)
break;
}
if(ch==’o’||ch1==’o’) // For Clear The Screen
{ y=0;z=0;
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("0");
gotoxy(row,col);
continue;
}
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%g",y);
z=0;
}

// getch();
closegraph();
remove_mouse();
exit(0);

}

//************************************************************
// *
// This function gets the user’s Input *
// *
//************************************************************

char input()
{
X=0;Y=0;
char ch;
show_mouse();
if(bflag!=’u’)
{
button_3d(108,140,208,160,UNCLICKED,"DEC",15);
button_3d(218,140,318,160,UNCLICKED,"OCT",0);
button_3d(328,140,428,160,UNCLICKED,"HEX",0);
button_3d(438,140,538,160,UNCLICKED,"BIN",0);
bflag=’u’;
}
do
{
mouse();
if (X>=350 && X<=380 && Y>=205 && Y<=225) // Condition For 7
{
hide_mouse();
button_3d(350,205,380,225,CLICKED,"7",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(350,205,380,225,UNCLICKED,"7",0);
show_mouse();
ch=’7′;
return ch;
}

//**********************************************

if (X>=390 && X<=420 && Y>=205 && Y<=225) // Condition For 8
{

hide_mouse();
button_3d(390,205,420,225,CLICKED,"8",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(390,205,420,225,UNCLICKED,"8",0);
show_mouse();
ch=’8′;
return ch;
}

//*****************************************

if (X>=430 && X<=460 && Y>=205 && Y<=225) // Condition For 9
{
hide_mouse();
button_3d(430,205,460,225,CLICKED,"9",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(430,205,460,225,UNCLICKED,"9",0);
show_mouse();
ch=’9′;
return ch;
}

//***********************************

if (X>=350 && X<=380 && Y>=230 && Y<=250) // Condition For 4
{
hide_mouse();
button_3d(350,230,380,250,CLICKED,"4",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(350,230,380,250,UNCLICKED,"4",0);
show_mouse();
ch=’4′;
return ch;
}

//***********************************

if (X>=390 && X<=420 && Y>=230 && Y<=250) // Condition For 5
{
hide_mouse();
button_3d(390,230,420,250,CLICKED,"5",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(390,230,420,250,UNCLICKED,"5",0);
show_mouse();
ch=’5′;
return ch;
}

//***********************************

if (X>=430 && X<=460 && Y>=230 && Y<=250) // Condition For 6
{
hide_mouse();
button_3d(430,230,460,250,CLICKED,"6",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(430,230,460,250,UNCLICKED,"6",0);
show_mouse();
ch=’6′;
return ch;
}

//***********************************

if (X>=480 && X<=510 && Y>=230 && Y<=250) // Condition For *
{
hide_mouse();
button_3d(480,230,510,250,CLICKED,"*",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(480,230,510,250,UNCLICKED,"*",0);
show_mouse();
ch=’*’;
return ch;
}
//***********************************

if (X>=515 && X<=545 && Y>=230 && Y<=250) // Condition For /
{
hide_mouse();
button_3d(515,230,545,250,CLICKED,"/",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(515,230,545,250,UNCLICKED,"/",0);
show_mouse();
ch=’/’;
return ch;
}

//***********************************
int a,b;
if (X>=350 && X<=380 && Y>=255 && Y<=275) // Condition For 1
{
hide_mouse();
button_3d(350,255,380,275,CLICKED,"1",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(350,255,380,275,UNCLICKED,"1",0);
show_mouse();
ch=’1′;
return ch;
}

// *************************************

if (X>=390 && X<=420 && Y>=255 && Y<=275) // Condition For 2
{
hide_mouse();
button_3d(390,255,420,275,CLICKED,"2",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(390,255,420,275,UNCLICKED,"2",0);
show_mouse();
ch=’2′;
return ch;
}

// *************************************

if (X>=430 && X<=460 && Y>=255 && Y<=275) // Condition For 3
{
hide_mouse();
button_3d(430,255,460,275,CLICKED,"3",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(430,255,460,275,UNCLICKED,"3",0);
show_mouse();
ch=’3′;
return ch;
}

// *************************************

if (X>=350 && X<=380 && Y>=280 && Y<=300) // Condition For 0
{
hide_mouse();
button_3d(350,280,380,300,CLICKED,"0",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(350,280,380,300,UNCLICKED,"0",0);
show_mouse();
ch=’0′;
return ch;
}

// *************************************

if (X>=390 && X<=420 && Y>=280 && Y<=300) // Condition For .
{
hide_mouse();
button_3d(390,280,420,300,CLICKED,".",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(390,280,420,300,UNCLICKED,".",0);
show_mouse();
ch=’.’;
return ch;
}

//**********************************************

if (X>=430 && X<=460 && Y>=280 && Y<=300) // Condition For pi
{
hide_mouse();
button_3d(430,280,460,300,CLICKED,"pi",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(430,280,460,300,UNCLICKED,"pi",0);
show_mouse();
ch=’h’;
return ch;
}

//***********************************************

if (X>=480 && X<=510 && Y>=255 && Y<=275) // Condition For –
{
hide_mouse();
button_3d(480,255,510,275,CLICKED,"-",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(480,255,510,275,UNCLICKED,"-",0);
show_mouse();
ch=’-‘;
return ch;
}

//**************************************************

if (X>=515 && X<=545 && Y>=255 && Y<=275) // Condition For +
{
hide_mouse();
button_3d(515,255,545,275,CLICKED,"+",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(515,255,545,275,UNCLICKED,"+",0);
show_mouse();
ch=’+’;
return ch;
}

//*****************************************************

if (X>=350 && X<=460 && Y>=305 && Y<=325) // Condition For =
{
hide_mouse();
button_3d(350,305,460,325,CLICKED,"=",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(350,305,460,325,UNCLICKED,"=",0);
show_mouse();
ch=’=’;
return ch;
}

//*****************************************************

if (X>=480 && X<=545 && Y>=305 && Y<=325) // Condition For shift
{
hide_mouse();
button_3d(480,305,545,325,CLICKED,"shift",BLUE);
show_mouse();
delay(250);
hide_mouse();
button_3d(480,305,545,325,UNCLICKED,"shift",BLUE);
show_mouse();
ch=’~’;
sflag=1;
return ch;
}

//*************************************

if (X>=480 && X<=510 && Y>=205 && Y<=225) // Condition For AC
{
hide_mouse();
button_3d(480,205,510,225,CLICKED,"AC",4);
show_mouse();
delay(250);
hide_mouse();
button_3d(480,205,510,225,UNCLICKED,"AC",4);
show_mouse();
ch=’o’;
return ch;
}
/********************C*/
if (X>=515 && X<=545 && Y>=205 && Y<=225) // Condition For C
{
hide_mouse();
button_3d(515,205,545,225,CLICKED,"CE",4);
show_mouse();
delay(250);
hide_mouse();
button_3d(515,205,545,225,UNCLICKED,"CE",4);
show_mouse();
ch=’a’;
return ch;
}

// ****************************************

if (X>=100 && X<=150 && Y>=205 && Y<=230) // Condition For Sin
{
hide_mouse();
button_3d(100,205,150,230,CLICKED,"Sin",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(100,205,150,230,UNCLICKED,"Sin",0);
show_mouse();
ch=’s’;
return ch;
}

//***********************************

if (X>=160 && X<=210 && Y>=205 && Y<=230) // Condition For Cos
{
hide_mouse();
button_3d(160,205,210,230,CLICKED,"Cos",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(160,205,210,230,UNCLICKED,"Cos",0);
show_mouse();
ch=’c’;
return ch;
}

//***********************************

if(X>=515&&X<=545&&Y>=280&&Y<=300) //inverse
{
hide_mouse();
button_3d(515,280,545,300,CLICKED,"inv",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(515,280,545,300,UNCLICKED,"inv",0);
show_mouse();
ch=’m’;
return ch;
}

if (X>=220 && X<=270 && Y>=205 && Y<=230) // Condition For Tan
{
hide_mouse();
button_3d(220,205,270,230,CLICKED,"Tan",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(220,205,270,230,UNCLICKED,"Tan",0);
show_mouse();
ch=’t’;
return ch;
}

//*********************************** */

if (X>=100 && X<=150 && Y>=250 && Y<=275) // Condition For sin^-1
{
hide_mouse();
button_3d(100,250,150,275,CLICKED,"sin^-1",0);
show_mouse();
delay(150);
hide_mouse();
button_3d(100,250,150,275,UNCLICKED,"sin^-1",0);
show_mouse();
ch=’i’;
return ch;
}
//**************************

if (X>=160 && X<=210 && Y>=250 && Y<=275) // Condition For cos^-1
{
hide_mouse();
button_3d(160,250,210,275,CLICKED,"cos^-1",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(160,250,210,275,UNCLICKED,"cos^-1",0);
show_mouse();
ch=’j’;
return ch;
}
//**************************

if (X>=430 && X<=460 && Y>=350 && Y<=370) // Condition For MR
{
hide_mouse();
button_3d(430,350,460,370,CLICKED,"MR",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(430,350,460,370,UNCLICKED,"MR",0);
show_mouse();
ch=’?’;
return ch;
}
if (X>=390 && X<=420 && Y>=350 && Y<=370) // Condition For M-
{
hide_mouse();
button_3d(390,350,420,370,CLICKED,"M-",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(390,350,420,370,UNCLICKED,"M-",0);
show_mouse();
ch='<‘;
return ch;
}
if (X>=350 && X<=380 && Y>=350 && Y<=370) // Condition For M+
{
hide_mouse();
button_3d(350,350,380,370,CLICKED,"M+",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(350,350,380,370,UNCLICKED,"M+",0);
show_mouse();
ch=’>’;
return ch;
}

if (X>=220 && X<=270 && Y>=250 && Y<=275) // Condition For tan^-1
{
hide_mouse();
button_3d(220,250,270,275,CLICKED,"tan^-1",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(220,250,270,275,UNCLICKED,"tan^-1",0);
show_mouse();
ch=’k’;
return ch;
}
//**************************

if (X>=100 && X<=150 && Y>=300 && Y<=325) // Condition For ln
{
hide_mouse();
button_3d(100,300,150,325,CLICKED,"ln",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(100,300,150,325,UNCLICKED,"ln",0);
show_mouse();
ch=’n’;
return ch;
}
//**************************

if (X>=160 && X<=210 && Y>=300 && Y<=325) // Condition For log
{
hide_mouse();
button_3d(160,300,210,325,CLICKED,"log",0);
show_mouse();
delay(150);
hide_mouse();
button_3d(160,300,210,325,UNCLICKED,"log",0);
show_mouse();
ch=’l’;
return ch;
}
//**************************

if (X>=220 && X<=270 && Y>=300 && Y<=325) // Condition For X^2
{
hide_mouse();
button_3d(220,300,270,325,CLICKED,"x^2",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(220,300,270,325,UNCLICKED,"x^2",0);
show_mouse();
ch=’p’;
return ch;
}
if (X>=100 && X<=150 && Y>=350 && Y<=370) // Condition For deg
{
hide_mouse();
button_3d(100,350,150,370,CLICKED,"deg",15);
button_3d(160,350,210,370,UNCLICKED,"rad",0);
button_3d(220,350,270,370,UNCLICKED,"gra",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(100,350,150,370,UNCLICKED,"deg",15);
show_mouse();
ch=’d’;
flagp=flag;
flag=ch;
return ch;
} //**************************
if (X>=160 && X<=210 && Y>=350 && Y<=370) // Condition For rad
{
hide_mouse();
button_3d(100,350,150,370,UNCLICKED,"deg",0);
button_3d(160,350,210,370,CLICKED,"rad",15);
button_3d(220,350,270,370,UNCLICKED,"gra",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(160,350,210,370,UNCLICKED,"rad",15);
show_mouse();
ch=’r’;
flagp=flag;
flag=ch;

return ch;
}
if (X>=220 && X<=270 && Y>=350 && Y<=370) // Condition For gra
{
hide_mouse();
button_3d(100,350,150,370,UNCLICKED,"deg",0);
button_3d(160,350,210,370,UNCLICKED,"rad",0);
button_3d(220,350,270,370,CLICKED,"gra",15);
show_mouse();
delay(250);
hide_mouse();
button_3d(220,350,270,370,UNCLICKED,"gra",15);
show_mouse();
ch=’g’;
flagp=flag;
flag=ch;
return ch;

}
if ((X>=480 && X<=545 &&Y>=350 &&Y <=370)||(X>=575&&X<=595&&Y>=23&&Y<=40)) //OFF
{
free(mem);
exit(0);
}
if (X>=108 && X<=208 && Y>=140 && Y<=160) // Condition For dec
{
hide_mouse();
button_3d(108,140,208,160,CLICKED,"DEC",15);
button_3d(218,140,318,160,UNCLICKED,"OCT",0);
button_3d(328,140,428,160,UNCLICKED,"HEX",0);
button_3d(438,140,538,160,UNCLICKED,"BIN",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(108,140,208,160,UNCLICKED,"DEC",15);
show_mouse();
ch=’u’;
bflagp=bflag;
bflag=ch;
return ch;
}
if (X>=218 && X<=318 && Y>=140 && Y<=160) // Condition For oct
{
hide_mouse();
button_3d(108,140,208,160,UNCLICKED,"DEC",0);
button_3d(218,140,318,160,CLICKED,"OCT",15);
button_3d(328,140,428,160,UNCLICKED,"HEX",0);
button_3d(438,140,538,160,UNCLICKED,"BIN",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(218,140,318,160,UNCLICKED,"OCT",15);
show_mouse();
ch=’v’;
bflagp=bflag;
bflag=ch;
return ch;
}
if (X>=328 && X<=428 && Y>=140 && Y<=160) // Condition For hex
{
hide_mouse();
button_3d(108,140,208,160,UNCLICKED,"DEC",0);
button_3d(218,140,318,160,UNCLICKED,"OCT",0);
button_3d(328,140,428,160,CLICKED,"HEX",15);
button_3d(438,140,538,160,UNCLICKED,"BIN",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(328,140,428,160,UNCLICKED,"HEX",15);
show_mouse();
ch=’w’;
bflagp=bflag;
bflag=ch;
return ch;
}
if (X>=438 && X<=538 && Y>=140 && Y<=160) // Condition For dec
{
hide_mouse();
button_3d(108,140,208,160,UNCLICKED,"DEC",0);
button_3d(218,140,318,160,UNCLICKED,"OCT",0);
button_3d(328,140,428,160,UNCLICKED,"HEX",0);
button_3d(438,140,538,160,CLICKED,"BIN",15);
show_mouse();
delay(250);
hide_mouse();
button_3d(438,140,538,160,UNCLICKED,"BIN",15);
show_mouse();
ch=’x’;
bflagp=bflag;
bflag=ch;
return ch;
}
if(X>=480&&X<=510&&Y>=280&&Y<=300)
{
hide_mouse();
button_3d(480,280,510,300,CLICKED,"sqrt",0);
show_mouse();
delay(250);
hide_mouse();
button_3d(480,280,510,300,UNCLICKED,"sqrt",0);
show_mouse();
ch=’q’;
return ch;
}

}while(kbhit() == 0);
ch=getch();
return ch;
}

//************************************************************************
// *
// This function performs the Calculations *
// *
//************************************************************************
double add(double x,double y,char ch)
{
switch(ch)
{
case ‘+’:
y=x+y;
break;
case ‘-‘:
y=x-y;
break;
case ‘*’:
y=x*y;
break;
case ‘/’:
y=x/y;
}
return y;
}

double angle_conv(double no)
{
if(flagp==’d’)
{
if(flag==’r’)
{
no=no*PI/180;
}
if(flag==’g’)
{
no=no*1.1111111;
}
}
else if(flagp==’r’)
{
if(flag==’d’)
{
no=no*180/PI;
}
if(flag==’g’)
{
no=no*180/PI*1.1111111;
}
}
else if(flagp==’g’)
{
if(flag==’r’)
{
no=no/(180*1.1111111)*PI;
}
if(flag==’d’)
{
no=no/1.1111111;
}
}
return(no);
}

void basecng(double y,double pnt1)
{
char str[17];
if(pnt1!=0)
{
gotoxy(row,col);
printf("The trial version does not support this feature");
getch();
bflag=’u’;
bflagp=’0′;
main();
}
if(bflagp!=’u’)
{
gotoxy(row,col);
printf("The trial version does not support this feature ");
getch();
bflagp=’0′;
bflag=’u’;
main();
}
switch(bflag)
{
case ‘v’:
itoa(y,str,8);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%s",str);
bflagp=’0′;
break;

case ‘w’:
itoa(y,str,16);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%s",str);
bflagp=’0′;
// getch();
break;

case ‘x’:
itoa(y,str,2);
gotoxy(row,col);
printf("\t\t\t\t ");
gotoxy(row,col);
printf("%s",str);
// getch();
bflagp=’0′;
break;
}
bflag=’u’;
}[/code]