What is While Loop In C++

The while statement is used when the program needs to perform repetitive tasks. The general form of a while statement is:

while (condition)
statement;

The program will repeatedly execute the statement inside the while until the condition
becomes false (0).(If the condition is initially false, the statement will not be executed.)

In our while loop we compute the value of current_number and print it Next we need to
advance one term.This completes the body of the loop. The first two terms of the Fibonacci sequence are 1 and 1. We initialize our first two terms to these values.

A while loop executes statements repeatedly until the given condition evaluates to false. This control statement is used when it is not known, in advance, how many times a block of code is to be executed.

while loop may be used where we don’t know how many times loop must be run.Syntax of while loop in c++.

initilization;
while(condition)
{
Statement;
incr/decr;
}

Print Codeverb.com message for 5 times by using while loop

#include<iostream>
using namespace std;
int main(){
int i;
i=1;
clrscr();
while(i<=5)
{
cout<<“Codeverb.com %dn”,i);
i++;
}
return 0;
}

Output:
Codeverb.com 1
Codeverb.com 2
Codeverb.com 3
Codeverb.com 4
Codeverb.com 5

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