Repetition - Iteration

Repetition is the use of a for loop to execute one piece of code over and over. There are multiple ways to create a for loop though. These are:

• While uses one condition that which if met, will repeat the code.

1    while (true)
2         {
3           x ++
4         }

• For loops intialise a variable, check a condition and perform an action. This is done before each iteration.

1 for (int i = 0; i <= 1000000; i++)
2                     {
3                     }

• Do while is the same as a while, however it doesn't check until it has done one iteration.

1  do {
2      x ++
3     }
4  while (true)

An iteration is when a piece of code is repeated until a condition is reached.