题解 | 整数的个位

#include <stdio.h>
#include<math.h>

int main()
{
    int a = 0;
    while (scanf("%d", &a) != EOF)
    {
        if (a <= 0)
        {
            int n = 0;
            n = abs(a) % 10;
            printf("%d", n);
        }
        else
            printf("%d\n", a%10);
    }
    return 0;
}