a+b=x,ab=y

#include<stdio.h>
int judge(int x)
{
    int p[110],k,i,t,num;
    k=0;
    if(x<0)
    {
        x=-x;
        k=1;
    }
    num=1;
    while(x)
    {
        p[num++]=x%10;
        x=x/10;
    }
    t=0;
    for(i=1;i<num;i++)
        t=t*10+p[i];
    if(k)
        return -t;
    else return t;
}
int main()
{
    int n,a,b,x,y,s1,s2;
    scanf("%d",&n);
    while(n--)
    {
        scanf("%d %d",&x,&y);
        a=(x+y)/2;
        b=(x-y)/2;
        s1=judge(a);
        s2=judge(b);
        printf("%d %d\n",s1+s2,s1-s2);
    }
    return 0;
}

原文地址:https://www.cnblogs.com/sdutmyj/p/3094505.html