22.1 Function Definitions

We have already presented many examples of function definitions. To summarize the rules, a function definition looks like this:

returntype
functionname (parm_declarations…)
{
  body
}

The part before the open-brace is called the function header.

Write void as the returntype if the function does not return a value.

• Function Parameter Variables
• Forward Function Declarations
• Static Functions
• Arrays as Parameters
• Functions That Accept Structure Arguments