关于钱能书上的一个例子.大家来找找错,看看怎么才能运行成功.
#include <iostream>
#include <iomanip>
using namespace std;
class Date
{
int year,month,day;
void init();
public:
Date(const string& s);
Date(int y=2000,int m=1,int d=1);
bool isLeapYear()const;
friend ostream& operator < <(ostream& o,const Date& d);
};
void Date::init()
{
if(y> 5000||y <1||m <1||m> 12||d <1||d> 31)
exit(1);
}
Date::Date(int y,int m,int d)
{year=y;month=m;day=d;
init();}
Date::Date(const string& s)
{
year=atoi(s.substr(0,4).c_str());
month=atoi(s.substr(5,2).c_str());
day=atoi(s.substr(8,2).c_str());
init();
}
bool Date::isLeapYear()const
{return (year%4==0&&year%100)||year%400==0;}
ostream& operator < <(ostream& o,const Date& d)
{
o < <setfill( '0 ') < <setw(4) < <d.year < < '- ' < <setw(2) < <d.month < < '- ';
return o < <setw(2) < <d.day < < '\n ' < <setfill( ' ');
}
int main()
{
Date c( "2005-12-28 ");
Date d(2003,12,6);
Date e(2002);
Date f(2002,12);
Date g;
cout < <c < <d < <e < <f < <g;
}
[解决办法]
if(y> 5000||y <1||m <1||m> 12||d <1||d> 31)
========>
if(year> 5000||year <1||month <1||month> 12||day <1||day> 31)
