This C program calculates the the factorial of an integer number entered by the user. The function uses for loop to calculate the factorial and returns the number. Program terminates if a non integer number is entered. This C language program uses for loop in just a single statement to calculates the factorial of integer number.
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 | /******************************************************* * MYCPLUS Sample Code - https://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 * *******************************************************/ #include <stdio.h> int fact(int n); int main(void) { int current; printf("Enter a positive integer [to terminate enter non-positive] > "); scanf("%d", &t); while (current > 0) { printf("The factorial of %d is %d\n", current, fact(current)); printf("Enter a positive integer [to terminate enter non-positive] > "); scanf("%d", &t); } } /* n is a positive integer. The function returns its factorial */ int fact(int n) { int lcv; /* loop control variable */ int p; /* set to the product of the first lcv positive integers */ for(p=1, lcv=2; lcv <= n; p=p*lcv, lcv++); return p; } |
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