함수3 - 형성평가6

http://www.jungol.co.kr/bbs/board.php?bo_table=pbank&wr_id=136&sca=10d0 

JUNGOL

 

 

#include <bits/stdc++.h>
using namespace std;
//함수3 - 형성평가6

int rec(int mul, int n){
    if(n == 0)
        return mul;
    int t = n%10;
    if( t != 0){
        mul *= t;
    }
    return rec(mul, n/10);
}
int main() {
    int a,b,c;
    cin >> a >> b >> c;
    int n = a * b * c;

    printf("%d ",rec(1, n));

    return 0;
}