use c+ function in c++ code example

Example 1: function in c++

#include <iostream>

using namespace std;

void function(){
    cout << "I am a function!" << endl;
}

int main()
{
    function();

    return 0;
}

Example 2: functions in C++

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

int main () {
  Hello();
}