Calculator.cpp

# include <iostream>

using namespace std;

int main() {

  char op;

  float num1, num2;

  cout << "Enter operator: +, -, *, /: ";

  cin >> op;

  cout << "Enter two operands: ";

  cin >> num1 >> num2;

  switch(op) {

    case '+':

      cout << num1 << " + " << num2 << " = " << num1 + num2;

      break;

    case '-':

      cout << num1 << " - " << num2 << " = " << num1 - num2;

      break;

    case '*':

      cout << num1 << " * " << num2 << " = " << num1 * num2;

      break;

    case '/':

      cout << num1 << " / " << num2 << " = " << num1 / num2;

      break;

    default:

      // If the operator is other than +, -, * or /, error message is shown

      cout << "Error! operator is not correct";

      break;

  }

  return 0;

}