C# program to demonstrate example of sizeof() operator

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mahmoud2506

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2022-05-09

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C# sizeof() operator

It is used to obtain the size of a data type in bytes (primitive data type).

Syntax:

    sizeof(type);
    sizeof(int);	//returns 4

Example:

    Input:
    sizeof(byte);
    sizeof(short);
    sizeof(int);

    Output:
    1
    2
    4

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mahmoud2506

2022-05-09

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C# code to get size of various primitive data types

In the below program, we are printing the size of different primitive data types, the size returned through the sizeof() operator is in bytes.

// C# program to demonstrate example of sizeof() operator
using System;
using System.IO;
using System.Text;

namespace IncludeHelp
{
    class Test
    {
        // Main Method 
        static void Main(string[] args)
        {
			
            Console.WriteLine("sizeof(byte)     : {0}", sizeof(byte));
            Console.WriteLine("sizeof(sbyte)    : {0}", sizeof(sbyte));
            Console.WriteLine("sizeof(short)    : {0}", sizeof(short));
            Console.WriteLine("sizeof(ushort)   : {0}", sizeof(ushort));
            Console.WriteLine("sizeof(char)     : {0}", sizeof(char));
            Console.WriteLine("sizeof(int)      : {0}", sizeof(int));
            Console.WriteLine("sizeof(float)    : {0}", sizeof(float));
            Console.WriteLine("sizeof(double)   : {0}", sizeof(double));
            Console.WriteLine("sizeof(bool)     : {0}", sizeof(bool));


            //hit ENTER to exit the program
            Console.ReadLine();
        }
    }
}

Output

sizeof(byte)     : 1
sizeof(sbyte)    : 1
sizeof(short)    : 2
sizeof(ushort)   : 2
sizeof(char)     : 2
sizeof(int)      : 4
sizeof(float)    : 4
sizeof(double)   : 8
sizeof(bool)     : 1

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