While Loop in C++

C++ While Loop is used to execute a code block repeatedly in a loop based on a condition.A while loop is a control statement using which the programmer can give instructions to the computer to execute a set of statement repeatedly as long as specified condition is satisfied. Ones the specified condition is false control comes out of the loop.

How while Loop Works in C++.

• step 1:-
  The initialization statement is executed first
• step 2:-
  Then, the test expression is evaluated. If the test expression is evaluated to false, then the while loop gets terminated and the control comes out of the while loop.
• step 3:-
  if the test expression is evaluated to true,The statements defined inside the while loop will repeatedly execute until the given condition fails.
• step 4:-
  After successful execution of statements inside the body of the while loop, the update expression is executed.
• step 5:-
  Again the test expression is evaluated.

    #include < iostream>
using namespace std;
int main()
{
    int n, i = 1;
    cout << "Enter number:" << endl;
    cin >> n;
    cout << endl;

    while (i <= n)
    {
        cout << i << endl;
        i++;
    }

    return 0;
}