题解 | 整数的十位

#include <stdio.h>

int main() {
    int a = 0;
    scanf("%d",&a);
    if(a>=0)
    {
        int d=a;

        int b = d / 10;
        int c = b % 10;
        printf("%d\n",c);
    }
    else
    {
        int d=-a;
    
        int b = d / 10;
        int c = b % 10;
        printf("%d\n",c);
    }
    return 0;
}