clocktype.h

这是学习《Data Structures Using C++》

class clockType
{
public:
    void setTime(int hours, int minutes, int seconds);
		//Function to set the time
		//The time is set according to the parameters
		//Postcondition: hr = hours; min = minutes; 
	    //               sec = seconds
 		//  The function checks whether the values of hours, , 
 		//  minutes and seconds are valid. If a value is invalid, 
 		//  the default value 0 is assigned.

    void getTime(int& hours, int& minutes, int& seconds);
		//Function to return the time
		//Postcondition: hours = hr; minutes = min;
		//	           seconds = sec

    void printTime() const;
		//Function to print the time
 		//Postcondition: Time is printed in the form hh:mm:ss

    void incrementSeconds();
		//Function to increment the time by one second.
		//Postcondition: The time is incremented by one second
		//  If the before-increment time is 23:59:59, the time
 		//  is reset to 00:00:00.

    void incrementMinutes();
		//Function to increment the time by one minute.
		//Postcondition: The time is incremented by one minute 
		//  If the before-increment time is 23:59:53, the time
  		//  is reset to 00:00:53.

    void incrementHours();
		//Function to increment the time by one hour.
		//Postcondition: The time is incremented by one hour 
		//  If the before-increment time is 23:45:53, the time 
		//  is reset to 00:45:53.

	bool equalTime(const clockType& otherClock) const;
		//Function to compare the two times.
		//Postcondition: Returns true if this time is equal to
		//               otherClock; otherwise, returns false

    clockType(int hours, int minutes, int seconds);
		//Constructor with parameters 
		//The time is set according to the parameters.
		//Postconditions: hr = hours; min = minutes; 
	    //                sec = seconds
 		//  The constructor checks whether the values of hours, 
 		//  minutes, and seconds are valid. If a value is invalid, 
 		//  the default value 0 is assigned.

    clockType();
		//Default constructor with parameters 
 		//The time is set to 00:00:00.
		//Postcondition: hr = 0; min = 0; sec = 0

private:
    int hr;  //stores the hours
    int min; //stores the minutes
    int sec; //stores the seconds
};