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As you can see in the syntax template, no body is included for the function, and a semicolon terminates the declaration. The formal parameter list is optional and has the form |
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The ampersand (&) attached to the name of a data type is optional and has a special significance that we cover later in the chapter. |
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In a function prototype, the formal parameter list must specify the data types of the parameters, but their names are optional. You could write either |
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void DoSomething( int, float ); |
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void DoSomething( int velocity, float angle ); |
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Sometimes it's useful for documentation purposes to supply names for the parameters, but the compiler ignores them. |
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You learned in Chapter 2 that a function definition consists of two parts: the function heading and the function body, which is syntactically a block (compound statement). Here's the syntax template for a function definition, specifically for a void function: |
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