class Date
{
public:
int Isleapyear();
void Print();
Date() //不带参数的构造函数
{
year = 2007;
month = 12;
day = 31;
}
Date(int y,int m,int d);
private:
int year,month,day;
};
class Newdate:public Date
{
public:
void show();
Newdate(int y,int m,int d):Date(y,m,d)
{
int n;
cout<<"加多少天: "<<endl;
cin>>n;
int a[13];
if(Isleapyear()){
int a[13]={0,31,29,31,30,31,30,31,31,30,31,30,31};}
else{
int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};}
num=n+d;
while(a[m]<num)
{
num=num-a[m];
if(m==12)
{
y++;
m=0;
}
m++;
}
newd=num;
newy=y;
newm=m;
}
private:
int newy,newm,newd,num;
};
int Date::Isleapyear()
{
return(year%4==0 && year%100!=0)||(year%400==0);
}
void Date::Print()
{
cout<<year<<"/"<<month<<"/"<<day<<endl;
}
Date::Date(int y,int m,int d)
{
year=y;
month=m;
day=d;
}
void Newdate:: show()
{
cout<<newy<<"/"<<newm<<"/"<<newd<<endl;
}
void main()
{ int y,m,d;
cout<<"请输入年月日: "<<endl;
cin>>y>>m>>d;
Date today(y,m,d);
Newdate new_date(y,m,d);
today.Print();
new_date.show();
}