Submission

PPPPPPPPPP

Score: 100

User: Pera

Problemset: เลขหลักของผลคูณ

Language: c

Time: 0.002 second

Submitted On: 2024-10-16 20:35:32

#include <stdio.h>

int main(void) {

    int a, b;
    scanf("%d %d", &a, &b);
    int x;
    scanf("%d", &x);

    int res = a * b;

    int tmp = res;
    int i = 0;
    while (res > 0) {
        res /= 10;
        i++;
    }

    if (x > i) {
        printf("_\n");
        return 0;
    }

    for (int j = 0; j < i - x; j++) {
        tmp /= 10;
    }

    printf("%d\n", tmp % 10);

}