Repetition - Iteration
Repetition
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 console.WriteLine(i);
4 }
Do while is the same as a while, however it doesn't check until it has done one iteration.
1 do
2 {
3 x ++;
4 }
5 while (true)
Foreach loops can also be used to access array variables [1]
1 foreach (int x in Arr)
2 {
3 Console.WriteLine(x);
4 }
Iteration
An iteration is the piece of code performed each time a loop runs.
Iterations can be skipped by calling the continue function.
1 for (int i = 0; i <= 10; i++)
2 {
3 if(i==5)
4 {
5 continue;
6 }
7 console.WriteLine(i);
8 }
Iteration can be terminated with the break function.
1 for (int i = 0; i <= 10; i++)
2 {
3 if(i==5)
4 {
5 break;
6 }
7 console.WriteLine(i);
8 }