An Ultimate Guide to C# Variables With Examples

C# has been developed to handle new workloads and new programming paradigms. Before using a variable in C#, it must be declared. A variable's name and type must be known before assigning a value. Thus, C# is a statically typed language.

In this 'C# Variable' tutorial, you will learn the major technical aspects of variables and fundamentals involving data types.

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What Is a C# Variable?

A variable is simply a one-of-a-kind identifier for a storage location that our program can access. The varieties of C# Variables determine their memory size, value range, and set of operations.

Each variable's datatype must match the data being saved. When we create a variable, the system reserves a chunk of memory equal to the variable's size.

We can now go on to the next chapter to learn about the different sorts of variables now that we have a basic knowledge of the definition and complexity of C# variables.

What Are the Types of Data Types of C# Variable? 

There are mainly three types of C# datatype, as explained below.

1. Numeral Data Type

• Signed

• Unsigned

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• Floating Point

2. Special Type

• Character Datatype: A single character is stored in a char data type. 'A' or 'c' must be encased in single quotation marks.
• String Datatype: A string is a sequence of characters stored in the string type (text). Double quotes must be used to delimit string values.
• Boolean Datatype: True and false are the only possible values for a boolean data type, defined by the bool keyword.

So far, we have learned about the major data types and the c# variables. Now let’s discuss the practical implementation of data types.

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Implementation of Data Types and C# Variables?

In C#, we will implement various data types and variables. 

Code: 

using System;

namespace C__Primitive_variable

{

    class Program

    {

        static void Main(string[] args)

        {

            //signed integer types

           sbyte sb =-120;

            short s = 30000;

            int i = 2000000000;

            long l = 1000000000000;

            Console.WriteLine("sb= "+sb);

            Console.WriteLine("s= "+s);

            Console.WriteLine("i= "+i);

            Console.WriteLine("l= "+l);

            //unsigned Integer types

            byte b = 122;

            ushort us = 60123;

            uint ui = 400000000;

            ulong ul= 18000000000000;

            Console.WriteLine("b= "+b);

            Console.WriteLine("us= "+us);

            Console.WriteLine("ui= "+ui);

            Console.WriteLine("ul= "+ul);

            // floating point type

            float f = 12.7f;

            double d = 23.67;

            decimal dm = 99.1079m;

            Console.WriteLine("f= "+f);

            Console.WriteLine("d= "+d);

            Console.WriteLine("dm= "+dm);      

      // other variable types

            char c = 't';

            bool flag = true;

            string str = "Welcome to Simplilearn";

            Console.WriteLine("c= "+c);

            Console.WriteLine("flag= "+!flag);

            Console.WriteLine("str= "+str);

        }

    }

}

By now, you have a good grip on the technical aspects of C# Variables. 

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Next Steps

The next lesson in your C# training can be "Operators and Expressions in C#." There are a variety of symbols that can be used to do a variety of functions, including operators. Variables and values are nothing new to operators. The combination of operands and operators makes up an expression in C#. At the very least, an expression requires an operand; nonetheless, it can have no operators.

Everything from data types to properly declaring and using variables was covered in this guide. You now have a strong base upon which to erect the C# programs' building components. Remember that learning is best accomplished by doing, so take a moment to experiment with the examples we looked at.

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The comments section below is open for questions and comments about this 'C# Variable' tutorial. Happy learning!