915 B
Ifs and elses
Syntax
Each if statement consists of the if keyword, followed by an condition expression in parenthesis, followed by an else body statement. Optionally, the statement may be followed by an else keyword, which is followed by a body statement on its own.
if (condition) body
// or
if (condition) body else else_body
No semicolons are required after the body of an if/else statement, unless the body statement itself requires one.
Behavior
The condition may be of any integral type.
First, the condition is checked. If it's non-zero, the body is executed. If it's a zero (and there's an else body), the else body gets executed.
Optimizations
The compiler may either 1. omit condition checking and the else body, and just keep the body, if the condition is determined to be non-zero, or 2. omit the condition check and the body, if the condition is determined to be zero.