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int Keyword in C#
  • Last Updated : 22 Jun, 2020

Keywords are the words in a language that are used for some internal process or represent some predefined actions. int is a keyword that is used to declare a variable which can store an integral type of value (signed integer) the range from -2,147,483,648 to 2,147,483,647. It is an alias of System.Int32.

Syntax:

int variable_name = value;

Int keyword occupies 4 bytes (32 bits) space in the memory.

Example:

Input: num: -245

Output: num: -245
        Size of an int variable: 4

Input: num = 7923645

Output: Type of num: System.Int32
        num: 7923645
        Size of a int variable: 4

Example 1:






// C# program for int keyword
using System;
using System.Text;
  
class geeks {
  
    static void Main(string[] args)
    {
        // variable declaration
        int num = -245;
  
        // to print value
        Console.WriteLine("num: " + num);
  
        // to print size
        Console.WriteLine("Size of a int variable: " + sizeof(int));
    }
}

Output:

num: -245
Size of a int variable: 4

Example 2:




// C# program for int keyword
using System;
using System.Text;
  
namespace Test {
  
class geeks {
  
    static void Main(string[] args)
    {
        // variable declaration
        int num = 7923645;
  
        // to print type of variable
        Console.WriteLine("Type of num: " + num.GetType());
  
        // to print value
        Console.WriteLine("num: " + num);
  
        // to print size
        Console.WriteLine("Size of a int variable: " + sizeof(int));
  
        // to print minimum & maximum value of int
        Console.WriteLine("Min value of int: " + int.MinValue);
        Console.WriteLine("Max value of int: " + int.MaxValue);
  
        // hit ENTER to exit
        Console.ReadLine();
    }
}
}

Output:

Type of num: System.Int32
num: 7923645
Size of a int variable: 4
Min value of int: -2147483648
Max value of int: 2147483647

Example 3:




// C# program for int keyword
using System;
using System.Text;
  
class geeks {
  
    static void Main(string[] args)
    {
  
        // variable declaration
        int num1 = 2147483650;
  
        // to print value
        Console.WriteLine("num1: " + num1);
  
        // variable declaration
        int num = 792.53;
  
        // to print value
        Console.WriteLine("num: " + num);
    }
}

Error: When we input wrong integer and also input number beyond the range

Constant value `2147483650′ cannot be converted to a `int’
Cannot implicitly convert type `double’ to `int’




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