Examples:

• float Average3 (int a, int b, int c);
• int Sum10 (void);
• void PrintAnswer (float);

• Don't forget the semi-colon at the end of each declaration.
• void at a returnType means that the function doesn't return a value. If it is used as an argument, the functions takes no arguments.
• Some of the functions above have descriptive variable names and others just have the type of the argument. Naming of the arguments in function prototypes is optional.