date.h

来自「Data Structures with C++附代码」· C头文件 代码 · 共 53 行

#ifndef DATE_CLASS
#define DATE_CLASS

#include <string.h>
#include <strstream.h>          // array based I/O stream methods

class Date
{   
    private:
        // private members that specify the date
        int month, day, year;
    public:
        // constructors. default date is January 1, 1900
        Date (int m = 1, int d = 1, int y = 0);
        Date (char *dstr);
        
        // output the date in the format "month day, year"
        void PrintDate (void);
};

// constructor. month, day, year given as integer values mm dd yy
Date::Date (int m, int d, int y) : month(m), day(d)
{
    year = 1900 + y;    // y is a year in the 20th century
}

// constructor. month, day, year given as string "mm/dd/yy"
Date::Date (char *dstr)
{
    char inputBuffer[16];
    char ch;

    // copy string to inputBuffer and declare an array based input stream
    strcpy(inputBuffer,dstr);
    istrstream input(inputBuffer, sizeof(inputBuffer));

    // read from input stream. use ch to read the '/' characters
    input >> month >> ch >> day >> ch >> year;
    year += 1900;
}

// print date with full month name.
void Date::PrintDate (void)
{
    // allocate static array of month names. Index 0 is NULL string.
    static char *Months[] = {"","January","February","March","April",
                             "May","June", "July","August", "September",
                             "October","November","December"}; 

    cout << Months[month] << " " << day << ", " << year;
}

#endif  // DATE_CLASS