C++ do while loop

do while loop is post-test loop that execute statement or set of statements at least one time either condition is false. do while loop has much similar structure to while loop. It is also used to implement iterative structure.

Syntax:

Initialization ;

do {

    statements ;

    increament / decrement ;

} while ( condition ) ;

To understand  Initialization, increament / decrement, condition and statements read while statement.

Example:

#include <iostream>
using namespace std;

int main(int argc, char** argv) {
	// initialization.
	int a = 1;
	
	// do while loop statement.
	do {
		
		// output statement.
		cout<<"IMS\n";
		
		// increment.
		a = a + 1; // a++ can also be used.
		
	} while ( a <= 5 ); // semicolon is used after condition.
	return 0;
}

Output:

Difference between while and do while loop: