1153 Simple Factorial

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Simple Factorial

Read a value N. Calculate and write its corresponding factorial. Factorial of N = N * (N-1) * (N-2) * (N-3) * ... * 1.

Input

The input contains an integer value N (0 < N < 13).

Output

The output contains an integer value corresponding to the factorial of N.

Input Sample	Output Sample
4	24

Solution:

#include <stdio.h> int main() {     int n,i,pro=1;     scanf("%d", &n);     for(i=n;i>=1;i--)         pro*=i;     printf ("%d\n",pro);     return 0; }