Branching

Branching statements select which path of a program executes based on a condition.

if

An if statement executes its body when the condition evaluates to true. Conditions must have type bool.

if (temperature > 30)
{
    StartCooling();
}

An optional else branch executes when the preceding if condition is false.

if (temperature > 30)
{
    StartCooling();
}
else
{
    KeepRunning();
}

Place another if after else to test several conditions in order. The first matching branch runs.

if (health == 0)
{
    Stop();
}
else if (health < 25)
{
    Warn();
}
else
{
    Continue();
}