Try this code for you requirement It will solve you problem.
As you want it will check for abcd if it is there it will check for abcd1 file.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | <br /> #include<stdio.h><br /> #include<string.h><br /> #include<stdlib.h><br /> #include<limits.h><br /> <br /> char *reverse(char s[])<br /> {<br /> int c,i,j;<br /> <br /> for(i=0,j=strlen(s)-1;i<j;i++,j--)<br /> {<br /> c=s<i>;<br /> s</i><i>=s[j];<br /> s[j]=c;<br /> }<br /> return s;<br /> }<br /> <br /> <br /> <br /> char *itoa(int n)<br /> {<br /> char s[100];<br /> int i,sign,ind=0,mod,w=0;<br /> if((sign=n)<0){<br /> if(sign<=INT_MIN)<br /> {<br /> mod=-(n%10);<br /> n=n/10;<br /> ind=1;<br /> }<br /> n=-n;<br /> }<br /> i=0;<br /> do<br /> {<br /> if(ind==1)<br /> {<br /> s[0]=mod+'0';<br /> i++;<br /> ind=0;<br /> }<br /> s[i++]=n%10+'0';<br /> <br /> }while((n/=10)>0);<br /> s</i><i>='';<br /> return (reverse(s));<br /> }<br /> <br /> int exists(const char *filename)<br /> {<br /> FILE *f = fopen(filename, "r");<br /> if (!f) return 0;<br /> fclose(f);<br /> return 1;<br /> }<br /> <br /> int main ( )<br /> {<br /> char str [1024];<br /> strcpy(str,"abcd");<br /> int num = 0;<br /> int created = 0;<br /> while(created == 0)<br /> {<br /> num++;<br /> if(exists(str))<br /> {<br /> char numb[100];<br /> strcpy(str,"abcd");<br /> strcpy(numb,"");<br /> strcpy(numb,itoa(num));<br /> strcat(str,numb);<br /> }<br /> else<br /> {<br /> FILE *f=fopen(str,"w");<br /> printf("%s file createdn",str);<br /> created=1;<br /> fclose(f);<br /> }<br /> }<br /> return 0 ;<br /> }<br /> </i> |