Submission

PP--PPPP-P

Score: 70

User: TirpitZ

Problemset: เลขหลักของผลคูณ

Language: c

Time: 0.002 second

Submitted On: 2024-10-15 16:00:32

#include<stdio.h>

int main()
{
    long  num1,num2;
    int digit;
    scanf("%ld %ld %d",&num1,&num2,&digit);
    long long value;
    value=num1*num2;
    //printf("%lld\n",value);
    if(value<0)    value=value*(-1);
    char screen[11];
    int cnt=0;
    while(1)
    {
        screen[cnt]=value%10;
        //printf("%d ",screen[cnt]);
        cnt++;
        if(value/10==0)    break;
        value=value/10;
    }
    //printf("\n");
    if(digit>cnt)    printf("-");
    else   printf("%d",screen[cnt-digit]);
}