Variables

int

for storing integer

int age = 21;

double

can store a decimal

double height = 300.5;

bool

can store boolean only true or false

bool alive = true;

char

for a single carachter

char symbole = '@';

String

don't forget the S in upper

String name = "Hello";

constants

immutable values wich are known at compile time and do not change for th life of the program

just add the const keyword

const double pi = 3.14;

Type casting

Converting a value to a different data type Very useful because user input will always be strings

double a = 3.14;
int b= Convert.ToInt32(a);

int c= 123;
double d= Convert.ToDouble(c);

int e= 321;
String d= Convert.ToString(e);

String g = "$";
char h = Convert.ToChar(g);

String i = "true";
bool j = Convert.ToBoolean(i);

GetType

Get the type of a variable

double a = 3.14;
Console.WriteLine(a.GetType())

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