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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     double num1, num2;
  6.     char op;
  7.     char choice;
  8.  
  9.     do {
  10.         // Input numbers and operator
  11.         cout << "Enter first number: ";
  12.         cin >> num1;
  13.  
  14.         cout << "Enter an operator (+, -, *, /): ";
  15.         cin >> op;
  16.  
  17.         cout << "Enter second number: ";
  18.         cin >> num2;
  19.  
  20.         // Perform calculation
  21.         switch (op) {
  22.             case '+':
  23.                 cout << "Result: " << num1 + num2 << endl;
  24.                 break;
  25.             case '-':
  26.                 cout << "Result: " << num1 - num2 << endl;
  27.                 break;
  28.             case '*':
  29.                 cout << "Result: " << num1 * num2 << endl;
  30.                 break;
  31.             case '/':
  32.                 if (num2 != 0)
  33.                     cout << "Result: " << num1 / num2 << endl;
  34.                 else
  35.                     cout << "Error: Cannot divide by zero!" << endl;
  36.                 break;
  37.             default:
  38.                 cout << "Error: Invalid operator!" << endl;
  39.         }
  40.  
  41.         // Ask if the user wants to continue
  42.         cout << "Do you want to perform another calculation? (y/n): ";
  43.         cin >> choice;
  44.  
  45.     } while (choice == 'y' || choice == 'Y');
  46.  
  47.     cout << "Calculator closed. Goodbye!" << endl;
  48.  
  49.     return 0;
  50. }
  51.  
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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Enter first number: Enter an operator (+, -, *, /): Enter second number: Error: Invalid operator!
Do you want to perform another calculation? (y/n): Calculator closed. Goodbye!
https://ideone.com/f6JD7w
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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