题解：三目运算

#include<iostream>
using namespace std;
int main(){
    int a,b;
    char c;
    cin>>a>>c>>b;
    if(c=='+'){
        cout<<a+b;
    }else if(c=='-'){
        cout<<a-b;
    }else if(c=='*'){
        cout<<a*b;
    }else if(c=='/'){
        cout<<a/b;
    }else{
        cout<<a%b;
    }
    //三目运算法：
    //cout<<(c=='+'?a+b:c=='-'?a-b:c=='*'?a*b:c=='/'?a/b:a%b);
}