Algorithm: 계승(Factorial)

#include <stdio.h>

int fatorial(int num);

void main(){

int num;

int ftr;

scanf("%d",&num);

ftr = fatorial(num);

printf("%d\n",ftr);

}

int fatorial(int num){

if(num == 0){

return 1;

}else

return num * fatorial(num-1);

}