PTA练习题

  1 #include<iostream>
  2 using namespace std;
  3 class Time
  4 {
  5     private:
  6         int hh;
  7         int mm;
  8         int ss;
  9     public:
 10         Time()
 11         {
 12             hh = 0;
 13             mm = 0;
 14             ss = 0;
 15         }
 16         void set(int h,int m,int s)
 17         {
 18             hh=h;
 19             mm=m;
 20             ss=s;
 21         }
 22         friend bool operator >(Time &t1,Time &t2);
 23         friend ostream & operator <<(ostream &,Time &);
 24 } ;
 25 bool operator >(Time &t1,Time &t2)
 26 {
 27     int re1=t1.hh*3600+t1.mm*60+t1.ss;
 28     int re2=t2.hh*3600+t2.mm*60+t2.ss;
 29     if(re1>re2)
 30     {
 31         return true;
 32     }
 33     else
 34     {
 35         return false;
 36     }
 37 }
 38  
 39 ostream &operator <<(ostream &output,Time&t)
 40 {
 41     output<<t.hh<<" "<<t.mm<<" "<<t.ss;
 42     return output;
 43 }
 44  
 45 class date
 46 {
 47     private:
 48         int year;
 49         int month;
 50         int day;
 51     public:
 52         date()
 53         {
 54             year = 0;
 55             month = 0;
 56             day = 0;
 57         }
 58         void set(int y,int m,int d)
 59         {
 60             year=y;
 61             month=m;
 62             day=d;
 63         }
 64         friend bool operator >(date &d1,date &d2);
 65         friend ostream & operator <<(ostream &,date &);
 66 };
 67  
 68 bool operator >(date &d1,date &d2)
 69 {
 70     int re1=d1.year*365+d1.month*30+d1.day;
 71     int re2=d2.year*365+d2.month*30+d2.day;
 72     if(re1>re2)
 73     {
 74         return true;
 75     }
 76     else
 77     {
 78         return false;
 79     }
 80 }
 81  
 82 ostream & operator <<(ostream &output,date &d)
 83 {
 84     output<<d.year<<" "<<d.month<<" "<<d.day;
 85     return output;
 86 }
 87  
 88 template <class T>
 89 T maxn(T x[], int len)
 90 {
 91     T max;
 92     max=x[0];
 93     for(int i=0; i<len; i++)
 94     {
 95         if(x[i]>max)
 96         {
 97             max=x[i];
 98         }
 99     }
100     cout<<max<<endl;
101     return max;
102 }
103  
104 int main()
105 {
106     int intArray[100];
107  
108     double douArray[100];
109     Time TimeArray[100];
110     date dateArray[100];
111     int ch;
112     int i=0;
113     while(cin>>ch)
114     {
115         if(ch==-1)
116         {
117             break;
118         }
119         if(ch==1)
120         {
121             while(cin>>intArray[i])
122             {
123                 if(intArray[i]==0)
124                 {
125                     break;
126                 }
127                 i++;
128             }
129             maxn(intArray,i);
130         }
131         if(ch==2)
132         {
133             while(cin>>douArray[i])
134             {
135                 if(douArray[i]==0)
136                 {
137                     break;
138                 }
139                 i++;
140             }
141             maxn(douArray,i);
142         }
143         if(ch==3)
144         {
145             int hour,minute,second;
146             while(cin>>hour)
147             {
148                 if(hour==0)
149                 {
150                     break;
151                 }
152                 cin>>minute>>second;
153                 TimeArray[i].set(hour,minute,second);
154                 i++;
155             }
156             maxn(TimeArray,i);
157         }
158         if(ch==4)
159         {
160             int years,months,days;
161  
162             while(cin>>years)
163             {
164                 if(years==0)
165                 {
166                     break;
167                 }
168                 cin>>months>>days;
169                 dateArray[i].set(years,months,days);
170                 i++;
171             }
172             maxn(dateArray,i);
173         }
174     }
175     return 0;
176 }