I need help again but writing loops

1. Write a while loop with a condition that checks if variable "var1" is greater than "var2". The area within the brackets can be blank or just a commented line (//) which shows where code would normally be executed on each time of iteration.

2. Write a for loop with a initilizer of "int i = 0" a condition of "i < 5", and an incrementor of "i++;". The code between the brackets can be empty or whatever you want.

3. If a integer variable "p" was equal to 0, what would it's value be once the line "p++;" was executed?

4. Explain what the incrementor does in a loop. The more details you give the better chance to receive full points.

These are home work questions but i don't have a permanent teacher