Variable
A variable is nothing but a name given to a storage area that our programs can manipulate. Each variable.
in C# has a specific type, which determines the size and layout of the variable's memory the range of
values that can be stored within that memory and the set of operations that can be applied to the variable.
The basic value types provided in C# can be categorized as −
Type Example
Integral types sbyte, byte, short, ushort, int, uint, long, ulong, and char
Floating point types float and double
Decimal types decimal
Boolean types true or false values, as assigned
Nullable types Nullable data types
Defining Variables
Syntax for variable definition in C# is –
dataType variable name;
Here, data_type must be a valid C# data type including char, int, float, double, or any user-
defined data type, and variable_list may consist of one or more identifier names separated by
commas.
Some valid variable definitions are shown here −
int i, j, k;
char c, ch;
float f, salary;
double d;
You can initialize a variable at the time of definition as −
int i = 100;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace HelloWorldApp
{
class Program
{
static void Main(string[] args)
{
short a;
int b;
double c;
/* actual initialization */
a = 10;
b = 20;
c = a + b;
Console.WriteLine("a = {0}, b = {1}, c = {2}",
a, b, c);
Console.ReadLine();
}
}
}
Tags
C#