Submission

Score: 70

User: por

Problemset: เลขหลักของผลคูณ

Language: c

Time: 0.003 second

Submitted On: 2025-09-22 20:07:33

#include <stdio.h>
int main(){

        int a;
        int b;
        int x;
        scanf("%d", &a);
        scanf("%d", &b);
        scanf("%d", &x);
        int c;
        c= a*b;
        //printf("%d ", c);
        int cnt=1;
        while(c>9){
            c=c/10;
            cnt++;
            //printf("e");
        }
        int y;
        y= cnt-x;
        if(y<0){
            printf("-");
            return 0;
        }
        c=a*b;
        for(int i=0;i<y;i++){
            c=c/10;
            //printf("%d ", c);
            //printf("e");
        }

        c=c%10;
        printf("%d", c);


}