// Executes a statement repeatedly until the value of the condition expression
//becomes false. The test takes place after each iteration.
do {
   //statement
} while(condition);

while (true) {
  cout << "hello" << endl;
}

int i = 0;
while (i < 5) {
  cout << i << "\n";
  i++;
}

//Executes a statement repeatedly, until the value of condition becomes false.
//The test takes place before each iteration
while(condition) {
  statement
}

do {
  // code block to be executed
}
while (condition);