Can you provide examples of functions in C++?

Can you provide examples of functions in C++?

Sure! In C++, a function is a block of code that performs a specific task. Here's a simple example:

#include <iostream>
using namespace std;

void greet() {
    cout << "Hello, World!" << endl;
}

int main() {
    greet(); // Calling the function
    return 0;
}
}

What about functions that take parameters?

Great question! Here's an example of a function that takes parameters:

#include <iostream>
using namespace std;

int add(int a, int b) {
    return a + b;
}

int main() {
    int sum = add(5, 3); // Calling the function with arguments
    cout << "Sum: " << sum << endl;
    return 0;
}

Can you explain the difference between void and return type functions?

Certainly! A void function does not return a value, while a function with a return type (like int) returns a value. For example:

void displayMessage() {
    cout << "This is a void function." << endl;
}

int getNumber() {
    return 42;
}

How do I use function overloading in C++?

Function overloading allows you to define multiple functions with the same name but different parameters. Here's an example:

#include <iostream>
using namespace std;

int multiply(int a, int b) {
    return a * b;
}

double multiply(double a, double b) {
    return a * b;
}

int main() {
    cout << multiply(2, 3) << endl; // Calls int version
    cout << multiply(2.5, 3.5) << endl; // Calls double version
    return 0;
}