Do While Loop

Definition:

In Do-while loops also the loop execution is terminated on the basis of test conditions.The main difference between a do-while loop and the while loop is in the do-while loop the condition is tested at the end of the loop body, i.e do-while loop is exit controlled whereas the other two loops are entry-controlled loops.

Example:

    // C++ program to Demonstrate do-while loop
    #include <iostream>
    using namespace std;
    int main()
   {
	   int i = 2; // Initialization expression

	   do {
		  // loop body
		  cout << "Hello World\n";

		 // update expression
		 i++;

	   } while (i < 1); // test expression

	return 0;
  }

Output