function in c 2b 2b

1// function example
2#include <iostream>
3using namespace std;
4
5int addition (int a, int b)
6{
7  int r;
8  r=a+b;
9  return r;
10}

1#include <iostream>
2
3using namespace std;
4
5void function(){
6    cout << "I am a function!" << endl;
7}
8
9int main()
10{
11    function();
12
13    return 0;
14}

1void Hello() {
2  std::cout << "Hello";
3}
4
5int main () {
6  Hello();
7}

1#include <iostream>
2#include <stdlib.h>
3#include <iomanip>
4#include <fstream>
5using namespace std;
6
7void function_one(double, double, double);
8
9int main() {
10  double r1 = 1.0;
11  double r2 = 2.0;
12  double x = 0.0;
13  function_one(r1, r2, x);
14  return 0;
15}
16
17void function_one(double rmin, double rmax, double x0) {
18  cout << "Function got called" << endl;
19}

1//Syntax
2    void myFunction() {
3  
4  // code to be executed
5}
6
7  

1#include <iostream>
2using namespace std;
3
4// Create a function
5void myFunction() {
6  cout << "I just got executed!";
7}
8
9int main() {
10  myFunction(); // call the function
11  return 0;
12}
13
14// Outputs "I just got executed!"