Explanation:

On the 1st iteration, when i=1 the while loop condition will check if i is less than or equal to 5 the answer is true so, the body of the loop will execute that is the sum value get added by i and i value get incremented by 1.

Similar to when i equal to 2,3,4,5

On the 6th iteration, when i=6 while loop condition will become false because i value is not less than or equal to 5 and the loop will terminate.

do-while loop:

The do-while loop is similar to the while loop. In the do-while loop also the looping statement has been executed repeatedly as long as the test condition is true. But the difference is do-while loop is an exit-controlled loop. The test condition is checked at the end of the looping statement.

This means that the body of the loop is executed at least once, even when the condition evaluates false during the 1st iteration.

Syntax:

do {
//Body of the loop;
} while (condition);

Flow chart:

Example of the do-while loop:

#include<iostream>
using namespace std;
void dowhile_loop() {
  int input;
  do {
    cout << "Welcome to TakeUForawrd" << '\n';
    cout << "TakeUForawrd is the best place to "
         << "learn data structures, algorithms,"
         << " most asked coding interview questions, "
         << "real interview experiences free of cost." << '\n';
    cout << "enter -1 to exit or any other key to "
         << "see this message again" << '\n';

    cin >> input;

  } while (input != -1);
}
int main() {
  dowhile_loop();
  return 0;
}

Output:-

Welcome to TakeUForawrd

takeuforward is the best place to learn data structures, algorithms, most asked coding interview questions, real interview experiences free o