C#
Programming Language designed by Anders Hejlsberg.
Last updated
Was this helpful?
Programming Language designed by Anders Hejlsberg.
Last updated
Was this helpful?
The parentheses are known as the method invocation operator.
string - for words, phrases, or any alphanumeric data enclosed by double-quotes.
char - for a single alphanumeric character enclosed by single quotes.
int - for a numeric whole number.
decimal - for a number with decimal values and m/M as a literal suffix.
bool - for a true/false boolean values.
Console.WriteLine("Hello, World!"); //string
Console.WriteLine('a'); //char
Console.WriteLine(123); //int
Console.WriteLine(123.456m); //decimal
Console.WriteLine(123.456M);
Console.WriteLine(true); //bool
Console.WriteLine(false);Variables are temporary values you store in the computer's memory.
Before you can use a variable, you have to declare it.
To declare a variable, you first select a data type for the kind of data you want to store and then give the variable a name that follows the rules.
bool processedCustomer;
char userOption;
decimal particlesPerMillion;
int gameScore;
string firstName;You must assign (set) a value to a variable before you can retrieve (get) a value from a variable.
You can initialize a variable by assigning a value to the variable at the point of declaration.
Assignment happens from right to left.
You use a single equals character as the assignment operator.
An implicitly typed local variable is created using the var keyword. The var keyword tells the compiler to infer the data type of the variable based on the value it is initialized to.
var message = "Hello world!";