Cpp Void

C++ void

Created By: chatGPT

In C++, the void keyword is used to specify that a function does not return a value. This is useful when you want to perform an operation without needing to send any information back to the caller. Here’s an example of how to declare a function with a void return type:

void displayMessage() {
    std::cout << "Hello, World!" << std::endl;
}

To call a void function, simply write its name followed by parentheses. Since it doesn’t return a value, you cannot use it in an expression. Here’s how you can call the displayMessage function:

int main() {
    displayMessage(); // This will call the function
    return 0;
}

You can also have void functions that take parameters. This allows you to customize the behavior of a function without returning a value. Here’s an example:

void greetUser(std::string name) {
    std::cout << "Hello, " << name << "!" << std::endl;
}

In this example, the greetUser function takes a string parameter and uses it to greet the user. You can call this function like this:

int main() {
    greetUser("Alice"); // Output: Hello, Alice!
    return 0;
}