C++ Calculator

// Online C++ compiler to run C++ program online
#include <iostream>
using namespace std;

int main() {
    // Write C++ code here
    string Operation;
    int Num1;
    int Num2;
    int ans;

    std::cout << "Number 1: " << endl;
    cin >> Num1;
    cout << "Number 2:" << endl;
    cin >> Num2;

    cout << "Choose operation:" << endl;
    cout << "Addition/Subtraction/Multiplication/Division" << endl;
    cin >> Operation;

    if (Operation == "Addition" || Operation == "addtion"){
        ans = Num1 + Num2;
        cout << "The answer is " << ans;
    }else if (Operation == "Subtraction" || Operation == "subtraction"){
        ans = Num1 - Num2;
        cout << "The answer is " << ans;
    }else if (Operation == "Multiplication" || Operation == "multiplication"){
        ans = Num1 * Num2;
        cout << "The answer is " << ans;
    }else if (Operation == "Division" || Operation == "division"){
        ans = Num1 / Num2;
        cout << "The answer is " << ans;
    }else {
        cout << "Error";
    }
    return 0;
}