HDU 1170 Balloon Comes！

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/a17865569022/article/details/81774943

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int t;cin>>t;
    while(t--)
    {
        char s;
        double a,b;
        cin>>s>>a>>b;
        double res=0;
        if(s=='+')
            res=a+b;
        else if(s=='-')
            res=a-b;
        else if(s=='*')
            res=a*b;
        else if(s=='/')
            res=a/b;
        int temp=res;
        if(abs(res-temp)<0.0000001)
            printf("%d\n",(int)res);
        else printf("%.2lf\n",res);
    }
    return 0;
}