PROBLEM 8.1 Write a function to calculate the factorial value of any integer entered through the keyboard. */
#include<stdio.h> int fact(int); int main() { int num; int factorial; printf("\nEnter a number:"); scanf("%d",&num); factorial=fact(num); printf("Factorial of %d=%d\n",num,factorial); return 0; } int fact(int num) { int i; int factorial=1; for(i=1;i<=num;i++) factorial=factorial*i; return(factorial*i); }