[C언어] 계승 (Factorial)

#include<stdio.h>

long long factorial(int);

int main(void){
   for(int i = 1; i <= 10; ++i){
      printf("%d! = %lld\n", i, factorial(i));
   }

   return 0;
}

long long factorial(int x){
   long long int result = 1;
   for(int i = 1; i <= x; ++i)
      result *= i;

   return result;
}