C++Constant|Constant and Variable Difference |Tutorial 8| For Beginners |E3 School-2020

Constant 

Constant means Permanent variables

Value only One Time Assign not to change other time

Constant means unchangeable and read-only variable.

Constant Sntaxy

const data_type  identifier = value;

const          👉👉👉👉👉  const

data_type   👉👉👉👉👉  int

identifier    👉👉👉👉👉  x

value          👉👉👉👉👉  12

Different Between Constant and Variables

Constant	Variables
A constant does not change its value over time.	A variable, on the other hand, changes its value dependent on the equation.
Constant Only one Time assigns the value not change use other time.	Variable any time value assign or any time change value.
Constant read-only.	Variable read and change value.
Syntax const data_type identifier = value; Only Assign and declare one line .	Syntax Data_type Identifier = Value;
Only Assign and declare one line.	Other Data_type identifier; Identifier = value;

Program

#include<iostream>

using namespace std;

main()

{

const int my = 20;

const float me= 10;

court<<my<<endl;

court<<me<<endl;

return 0;

}

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