Function Prototypes and Libraries

• Function Prototype Basics
  • Function Prototype (or Interface Specification)
    • ReturnType FunctionName(ParameterTypeList*);

              *Note:  only types are required; variable names are optional

  • How to Call Functions
    • Variable = FunctionName(Parameters) or
    • FunctionName(Parameters)
    • Examples:
      • sleep(1);
      • num = rand();
      • result = pow(x, y);
      • srand(time(0));

• Finding Predefined Functions
  • Using man
  • Using apropos

• Function Syntax
  • ReturnType FunctionName(ParameterList) { Statements }

• Examples:  area.cpp and a.cpp