Write a C program to calculate factorial.
int main() {
int num, result = 1, i;
/* get the input num from the user */
printf("Enter the value for num:");
scanf("%d", &num);
/* 1! or 0! is 1 */
if (num == 0 || num == 1)
printf("%d! = %d\n", num, 1);
/* finding factorial for the given input */
for (i = num; i > 0; i--) {
result = result * i;
}
/* print the result */
printf("%d! = %d\n", num, result);
return 0;
}
Output:
jp@jp-VirtualBox:~/$ ./a.out
Enter the value for num:5
5! = 120
Enter the value for num:5
5! = 120
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