Simple Calculator using switch statement in C++

Simple Calculator using switch statement:

# include <iostream>
using namespace std;

int main()
{
    char Res;
    float number1, number2;

    cout << "Enter operator + or - or * or /: ";
    cin >> Res;

    cout << "Enter two operands: ";
    cin >> number1 >> number2;

    switch(Res)
    {
        case '+':
            cout << number1+number2;
            break;

        case '-':
            cout << number1-number2;
            break;

        case '*':
            cout << number1*number2;
            break;

        case '/':
            cout << number1/number2;
            break;

        default:
     
            cout << "Operator is not correct";
            break;
    }

    return 0;
}