Function Declaration/Prototyope

• Function Declaration/Prototype

  Syntax:

  returnType functionName(parameterList);

  where:

  returnType - data type of value to be returned by the function

  functionName - a unique identifier of the function

  parameterList - list of input variables with data type and separated by commas. It is sometimes called formal arguments.
• Function Declaration/Prototype

  Syntax:

  returnType functionName(parameterList);

  where:

  returnType - data type of value to be returned by the function

  functionName - a unique identifier of the function

  parameterList - list of input variables with data type and separated by commas. It is sometimes called formal arguments.
• Function Declaration/Prototype

  Example:

  void printDisplayFunction(string message);

  int addFunction (int n1, int n2);

  float computeFunction(float, float);

  double computeFunction(double = 1.0, double = 3.5);

  int swapFunction(int &x, int &y);
• Function Declaration/Prototype Syntax: returnType functionName(parameterList); where: returnType - data type of value to be returned by the function functionName - a unique identifier of the function parameterList - list of input variables with data type and separated by commas. It is sometimes called formal arguments.