how to make a while loop in c 2b 2b

1//vars
2int A; //any variable will do
3
4// loop
5do {
6  A = 0; // clearing last input from last looping
7  cout << "request value for A";
8  cin >> A;
9  
10}
11while (A != 'any value other than zero');

1do {
2   // codes;
3}
4while (testExpression);

1while (true) { // you can also put 1 or true: while (1)
2	//do stuff
3}

1while (x != 0){ ... }

1Console.WriteLine("By the time that For loops exist...");
2Console.WriteLine("While loops are TRAAAAAAAAAAAAAAASH");