In C#, loops are called iteration statements. We need to master both, recursion and loops. There are 3 kinds of loops in C# :
- while and do (...) while
- for
- foreach
> For the rest of the document, something between `<>`is something mandatory and something between `[]`is something optionnal
## While loop
```cs
while (<condition>)
{
	// repeat stuff
}
```
The ``condition`` is a boolean
**Example**
```cs
unit SumWhile(unit n)
{
	uint loop = 0;
	while (n > 1)
	{
		loop += 1;
		n = n - 1;
	}
	return loop;
}
```
### Iteration statements - do (..) while
```cs
do 
{
	// Repeat stuff
} while (condition)
```
Same  thing that the other one but return in a different way
**Example**
```cs
uint SumDoWhile(uint n)
{
	uint loop = 0;
	do
	{
		loop += 1;
		n = n - 1;
	} while (n > 1):
	return loop;
}
```

## For loop
```cs
for ([initialize]; [condition]; [iterator])
{
	// Repeat stuff
}
```
**Example:**
```cs
uint SumFor(uint n)
{
	uint res = 0;
	for (uint i = 1; i < n; ++i)
	{
		res += 1;
	}
	return res;
}
```
**Comparaison with the while loop**
```cs
for ([initialize]; [condition]; [iterator])
{
	// Repeat stuff
}

[initializer]
while ([condition])
{
	// Repeat stuff
	[iterator]
}
```

**We can also doo like the while loop**
```cs
for ( ; [condition] ; )
{
	// repeat stuff
}
```

## Foreach loop
```cs
string test = "ABCD";
foreach (char c in test)
{
	Console.WriteLine(c);
}
```

## Jump statements
Jump statements is something that can change the behaviour of a loop inside itself.
It's possible to change the behaviour of the loops using the following keyworkds:
- ``break``
- ``continue``
- ``return``
-