epicours/Prog/Loops.md

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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
## 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;
}
```