If Statements

If statements can be used to execute parts of the program only if a condition is true. The specialist term for this is "branching".
The condition of if statements can consist of more complex expressions, but always have to evaluate to a bool data type.

Here's a simple example for an if statement:

int counter = 1;
if counter <= 10 {
    counter += 3;
}
The block between the curly braces only gets executed when the variable counter is less or equal 10, otherwise it is going to be ignored.

Optional parentheses

As with the for, foreach and while loops, the parantheses around the head of the if statement are optional.

Let's take a look at a more complex condition:

dyn counter = 1;
bool otherCondition = false;
if (otherCondition ? counter : 5) != 1 {
    counter--;
}

This piece of code is a bit pointless but you can see, that you can also have more complex conditions in there.