error handling in C++

Error handling in C++ involves using try-catch blocks to handle exceptions. Here is a step-by-step explanation of error handling in C++:

1. First, you need to include the appropriate header file for exception handling, which is .

2. Within your code, you can enclose the potentially error-prone section of code within a try block. This is done using the keyword "try" followed by an opening curly brace.

3. Inside the try block, you write the code that might throw an exception.

4. If an exception is thrown within the try block, the program execution is immediately transferred to the catch block.

5. The catch block is defined with the keyword "catch" followed by an opening curly brace and the type of the exception you want to catch. You can catch multiple types of exceptions by chaining multiple catch blocks.

6. Inside the catch block, you can handle the exception by writing code specific to that exception. You can also print error messages or perform any necessary cleanup operations.

7. After the catch block, you can continue executing the rest of the code.

Here's an example code snippet that demonstrates error handling in C++:

#include <iostream>
#include <stdexcept>

int main() {
    try {
        int numerator = 10;
        int denominator = 0;
        if (denominator == 0) {
            throw std::runtime_error("Division by zero error");
        }
        int result = numerator / denominator;
        std::cout << "Result: " << result << std::endl;
    } 
    catch (std::runtime_error& e) {
        std::cout << "Exception caught: " << e.what() << std::endl;
    }

    return 0;
}

In the above example, the try block attempts to divide the numerator by zero, which is an invalid operation. This results in a runtime error, and the program execution is transferred to the catch block. The catch block catches the std::runtime_error exception and prints the error message.