pc008.c - bsc - Comprehensive codebase and coursework for the 4-year B.Sc. Computer Science Honours degree (WBSU)

pc008.c (535B)

      1 /* Factorial upto N */
      2 
      3 #include <stdio.h>
      4 
      5 int main()
      6 {
      7     int n, i;
      8     long long fact = 1;
      9     printf("Enter n : ");
     10     if (scanf("%d", &n) != 1)
     11     {
     12         printf("\nOnly non-negative number allowed.");
     13         return 1;
     14     }
     15     if (n < 0)
     16     {
     17         printf("\nOnly non-negative number allowed.");
     18         return 1;
     19     }
     20     if (n == 0)
     21     {
     22         printf("\nFactorial of 0 : 1");
     23         return 0;
     24     }
     25     for (i = 1; i <= n; i++)
     26         fact *= i;
     27     printf("\nFactorial of %d : %lld", n, fact);
     28     return 0;
     29 }