题解 | #实现简单计算器功能#

#include <iostream>
using namespace std;

int main() {

    //char str[100] = { 0 };
    //cin.getline(str, sizeof(str));

    // write your code here......
    string op;
    int x;
    int y;
    cin >> op >> x >> y;

    if (op == "add")
    {
        cout << x + y;
    }
    else if (op == "sub")
    {
        cout << x - y;
    }
    else if (op == "mul")
    {
        cout << x * y;
    }
    else if (op == "div")
    {
        if (y == 0)
        {
            cout << "Error";
        }
        else 
        {
            cout << x / y;
        }
    }

    return 0;
}