While Loop in C++ Programming

The while loop is repeats a statement or block while its controlling expression is true.The condition can be any Boolean expression.

The body of the loop will be executed as long as the conditional expression is true. When condition becomes false, control passes to the next line of code immediately following the loop.

If the condition to true, the code inside the while loop is executed.
The condition is evaluated again.
This process continues until the condition is false.
When the condition to false, the loop stops.

Syntax:
   while(Condition)
   {
       // body of loop;
       // Increment (or) Decrement;
   }

The program is a simple implementation of the while loop in C++.

It starts by declaring two integer variables: i and n. The variable i is initialized to 1, while n is uninitialized.
The user is prompted to enter the value of n. The value entered by the user is read and stored in the variable n using the cin statement.
A while loop is used to print the numbers from 1 to n. The loop continues as long as the value of i is less than or equal to n.
Within the while loop, the value of i is printed using the cout statement. Then, the value of i is incremented by 1 using the i++ statement.
Once the loop condition becomes false, i.e., i becomes greater than n, the loop exits and the program terminates.

Source Code

/*
Looping Statement
    1.While
    2.do While
    3.for
    4.for each
*/
#include<iostream>
using namespace std;
int main()
{
     int i=1,n;
     cout<<"\nEnter The Limit : ";
     cin>>n;
     while(i<=n)
     {
         cout<<"\n"<<i;
         i++;
     }
     return 0;
}

Output

Enter The Limit : 10

1
2
3
4
5
6
7
8
9
10

To download raw file Click Here

Program List

Flow Control

IF Statement Examples

Switch Case

Goto Statement

Break and Continue

While Loop

Do While Loop

For Loop

Friend Function in C++

String Examples

Array Examples

Structure Examples

Structure & Pointer Examples

Structure & Functions Examples

Enumeration Examples

Template Examples

Functions

Inheritance Examples

Hierarchical Inheritance

Hybrid Inheritance

Multiplication using Hybrid Inheritance

Multilevel Inheritance

Multiple Inheritance

Single Level Inheritance

Class and Objects

Constructor Example

Destructor Example

Destructor Example in C++

Operator Overloading Example

Operator and Function Example

Display Values using Friend Function