void

[swat]

Im a begennier of c++ programming i just didnt understood the function of void ....can anyone make me clear about the void function with some examples on it ..at what situation we should use it...and what is the advantage of using it...thanks u.

[luninspectra]

All functions have a type. Whether it be void, int or double (much more). All functions except void return a value!

You notice that main returns 0? For example

int main() {
cout << "HAHAHAHAH";
 return 0;
}

Well functions return values too (unless its a void). For example:

int multiply_numbers(int x, int y) {
int new_value;
new_value = x * y;
 return new_value;
}

Void functions, on the other hand, don't require a return value at all. They are just run.

void multiply_numbers(int x, int y) {
int new_value;
new_value = x * y;
//No return value!
}

Now still ambiguous, I will clear all your sinus problems up. For I shall demonstrate!

If I do this:

cout << multiply_numbers(x, y);

I'll get 10 if x = 2 & y = 5. BUT, that is ONLY IF the function was an integer. If it was a void...well that'd be ugly. Why? Well because void functions don't return anything. If its an integer, multiply_numbers(x, y) turns into 10. :)

It'd be useful to use void functions if you are welcoming the user. Such as:

void welcome_user() {
cout << "Welcome to my Freaking Program!\n";
cout << "Bow to me because I Like Bananas!";
}

Other things too :). Thats it for now.