C # Programming Overview

C # Programming Overview A simple C # program

Identifier

An identifier is a string used to name variables, methods, parameters, and many other program structures that will be elaborated later.

Key words

All C # Keywords are made up of lowercase letters, but. NET type name using the Pascal casing convention.

Main: The starting point of the program

• The executable starting point of a C # program is the first instruction in main
• Main first letter must be capitalized

Output text from a program

The BCL (base Class Library) provides the console class (in the System namespace), which contains methods for entering and outputting data to the console.
Write

Console.Write ("This is trivial text.");

WriteLine

System.Console.WriteLine ("This is Text1."); System.Console.WriteLine ("This is Text2."); System.Console.WriteLine ("This is Text3.");

format string

Console.WriteLine ("Both sample integers is {0} and {1}.", 3,6);

Multiple tags and values

Console.WriteLine ("Three integers is {1},{0} and {1}.", 3,6);

Formatting numeric strings

Console.WriteLine ("The Value:{0}.", 500); Console.WriteLine ("The Value:{0:c}.", 500);

Justification specifier

int myint=500; Console.WriteLine ("|{ 0,10}| ", myInt); Console.WriteLine ("|{ 0,-10}| ", myInt);

Format field

Double mydouble=12.345678; Console.WriteLine ("{0,-10:g}--general", mydouble); Console.WriteLine ("{0,-10}--default,same as General", MyDouble); Console.WriteLine ("{0,-10:f4}--fixed point,4 Dec places", MyDouble); Console.WriteLine ("{0,-10:c}--currency", mydouble); Console.WriteLine ("{0,-10:e3}--sci.notation,3 dec places", MyDouble); Console.WriteLine ("{0,-10:x}--hexadecimal integer", 1194719);

Standard numeric format specifier

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C # Programming Overview