function of in c++ code example

Example 1: functions in C++

void Hello() {
  std::cout << "Hello";
}

int main () {
  Hello();
}

Example 2: function in c++

#include <iostream>
using namespace std;

// Create a function
void myFunction() {
  cout << "I just got executed!";
}

int main() {
  myFunction(); // call the function
  return 0;
}

// Outputs "I just got executed!"