Better calculator

#include <iostream>

using namespace std;

void calculator() {
    int num1;
    int num2;
    string method;

    cout << "Enter a number: ";
    cin >> num1;
    cout << "Enter another number: ";
    cin >> num2;
    cout << "Add, subtract, multiply, or divide: ";
    cin >> method;

    if (method == "+" || method == "add")
    {
        cout << num1 + num2;
    }
    else if (method == "-" || method == "subtract")
    {
        cout << num1 - num2;
    }
    else if (method == "*" || method == "multiply")
    {
        cout << num1 * num2;
    }
    else if (method == "/" || method == "divide")
    {
        cout << num1 / num2;
    }
    else

    {
        cout << "Invalid form of math!";
    }

    cout << "\n";
    return calculator();
}

int main()
{
    calculator();
}