What are some examples of return codes in C++?

What are some examples of return codes in C++?

In C++, return codes are often used to indicate the success or failure of a function. For example, a function might return 0 for success and -1 for an error.

Can you give me a specific example of a function that uses return codes?

Sure! Here's a simple example:

int divide(int a, int b) {
    if (b == 0) return -1; // Error: division by zero
    return a / b; // Success
}

In this case, the function returns -1 if there's an error.

What should I do if I get a return code of -1?

If you receive a return code of -1, it typically indicates an error. You should check the conditions that led to the error, such as ensuring the divisor is not zero in the example provided.

Are there standard return codes I should be aware of?

Yes, many C++ programs use standard return codes like 0 for success, 1 for general errors, and specific codes for different types of errors. It's good practice to define these in your program.