To test the division function with various inputs, including division by zero, follow these steps: ```cpp #include #include int main() { try { // Test case 1: Valid division std::cout << "Test case 1: 10 / 2 = " << divide(10, 2) << std::endl; // Test case 2: Division by zero std::cout << "Test case 2: 10 / 0 = " << divide(10, 0) << std::endl; } catch (const std::invalid_argument& ia) { std::cerr << "Test case 2: Exception caught: " << ia.what() << std::endl; } try { // Test case 3: Division with negative numbers std::cout << "Test case 3: -10 / 2 = " << divide(-10, 2) << std::endl; } catch (const std::exception& e) { std::cerr << "Test case 3: Exception caught: " << e.what() << std::endl; } try { // Test case 4: Division by negative divisor std::cout << "Test case 4: 10 / -2 = " << divide(10, -2) << std::endl; } catch (const std::exception& e) { std::cerr << "Test case 4: Exception caught: " << e.what() << std::endl; } try { // Test case 5: Zero divided by non-zero std::cout << "Test case 5: 0 / 5 = " << divide(0, 5) << std::endl; } catch (const std::exception& e) { std::cerr << "Test case 5: Exception caught: " << e.what() << std::endl; } return 0; } ``` This test suite will: 1. Test valid division 2. Test division by zero (should throw exception) 3. Test division with negative numbers 4. Test division by negative divisor 5. Test zero divided by non-zero number The output should look something like this: ``` Test case 1: 10 / 2 = 5 Test case 2: Exception caught: Division by zero Test case 3: -10 / 2 = -5 Test case 4: 10 / -2 = -5 Test case 5: 0 / 5 = 0 ``` This will ensure your division function handles all edge cases properly. After testing, you can move to the next step of implementing the expression parsing function. To learn more about exception handling in C++, I recommend reading about: - [C++ Exception Handling](https://www.learncpp.com/cpp-tutorial/exception-handling/) - [std::exception](https://en.cppreference.com/w/cpp/language/exception) - [Error handling in C++](https://www.geeksforgeeks.org/error-handling-in-c-exceptions/)