Calculator (Math Operators + if statements)

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

int main()
{
    float num1, num2, result;
    string sign;
    cout << "Choose a number: ";
    cin >> num1;
    cout << "Choose another number: ";
    cin >> num2;
    cout << "Choose the operator (+, -, *, /): ";
    cin >> sign;

    if(sign == "+"){
        result = num1 + num2;
        cout << num1 << " plus " << num2 << " equals " << result << endl;
    }
    if(sign == "-"){
        result = num1 - num2;
        cout << num1 << " minus " << num2 << " equals " << result << endl;
    }
    if(sign == "*"){
        result = num1 * num2;
        cout << num1 << " times " << num2 << " equals " << result << endl;
    }
    if(sign == "/"){
        result = num1 / num2;
        cout << num1 << " divided by " << num2 << " equals " << result << endl;
    }

    return 0;
}