1. Functions
Used to write code only once
Can use parameters

2. using System;
namespace Demo01 {
class Program
static void Main(string[] args)
string name = "world";
int year = 2017;
for (int i = 0; i < 10; i++)
PrintYear(name, i + year); }
private static void PrintYear(string name, int year)
Console.WriteLine("Hello " + name + ", the year is " + year);

3. string name = "Loek";
Console.WriteLine(name);
name = "Antje";
int year = 2017;
for (int i = 0; i < 10; i++) {
// everything that happens here, happens 10 times
Console.WriteLine("Hello " + name + " the current year is " + (year + i)); }

4. Condition

5. int startYear = 2010;
for (int i = 0; i < 10; i++) {
int year = startYear + i;
if (year == 2017)
Console.WriteLine(year + " is the current year"); }
else
Console.WriteLine(year + " is NOT the current year");

6. int startYear = 2010;
for (int i = 0; i < 10; i++) {
int year = startYear + i;
if (year == 2017)
Console.WriteLine(year + " is the current year"); }
else if (year < 2017)
Console.WriteLine(year + " is before the current year");
else
Console.WriteLine(year + " is after the current year");

7. int startYear = 2010;
for (int i = 2010; i < 2020; i++) {
int year = startYear + i;
if (year == 2017)
Console.WriteLine(year + " is the current year"); }
else if (year < 2017)
Console.WriteLine(year + " is before the current year");
else
Console.WriteLine(year + " is after the current year");

8. Methods

9. Console.WriteLine("+======================================+");
Console.WriteLine("Hello, my name is: LOEK");
Console.WriteLine("");
Console.WriteLine("Hello, my name is: LEO");
Console.WriteLine("Hello, my name is: PIET");

10. static void Main(string[] args){
Console.WriteLine("Atendee list");
Console.WriteLine("––––––––––––––––––––––");
Console.WriteLine("");
PrintName("Karl");
PrintName("Petra"); }
static void PrintName(string name)
Console.WriteLine(name);