某次作业

只做了后两个，PPT哪一页我找不到了

 

 

/*
c++
1.对自加运算符重载的函数体（ppt里可以找到）进行四合一的操作
2.日期自增考虑实际输出
3.用友元重载前缀自加运算符
*/

#include<iostream>

using namespace std;
int day[]={0,31,28,31,30,31,30,31,31,30,31,30,31};

class Date
{
    public:
        Date(int a=1900,int b=1,int c=1):y(a),m(b),d(c){}    
        /*Date operator ++ ()
        {
            if(y%400==0 || (y%4==0||y%100!=0)) day[2]++;
            if(d+1>day[m])    
            {
                d=1;
                m++;
            }
            else d++;
            if(m==13) 
            {
                y++;m=1;
            }    
            if(y%400==0 || (y%4==0||y%100!=0)) day[2]--;
            return d;
        }
        Date operator ++ (int)
        {
            if(y%400==0 || (y%4==0||y%100!=0)) day[2]++;
            if(d+1>day[m])    
            {
                d=1;
                m++;
            }
            else d++;
            if(m==13) 
            {
                y++;m=1;
            }    
            if(y%400==0 || (y%4==0||y%100!=0)) day[2]--;
            return d;            
        }*/
        friend Date operator ++ (Date &d,int)
        {
            if(d.y%400==0 || (d.y%4==0||d.y%100!=0)) day[2]++;
            if(d.d+1>day[d.m])    
            {
                d.d=1;
                d.m++;
            }
            else d.d++;
            if(d.m==13) 
            {
                d.y++;d.m=1;
            }    
            if(d.y%400==0 || (d.y%4==0||d.y%100!=0)) day[2]--;
            return d;    
        }
        friend Date operator ++ (Date &d)
        {
            if(d.y%400==0 || (d.y%4==0||d.y%100!=0)) day[2]++;
            if(d.d+1>day[d.m])    
            {
                d.d=1;
                d.m++;
            }
            else d.d++;
            if(d.m==13) 
            {
                d.y++;d.m=1;
            }    
            if(d.y%400==0 || (d.y%4==0||d.y%100!=0)) day[2]--;
            return d;    
        }
        void print()
        {
            cout<<y<<" "<<m<<" "<<d<<endl;
        }
    private:
        int y,m,d;

};
/*
2004 2 28
*/

int main()
{
    int a,b,c;cin>>a>>b>>c;

    Date d(a,b,c);
    ++d;
    d.print();
    d++;
    d.print();
}