undefined reference to xxx的问题
#include<iostream>
using namespace std;
int daysOfMonth[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
struct PerpetualCalendar
{
int getYear();
int getMonth();
int getDay();
void setYear();
void setMonth();
void setDate();
int getWeek();
void printMonth();
void printYear();
void printDay();
void operate();
PerpetualCalendar();
PerpetualCalendar(int y,int m,int d);
int year;
int month;
int day;
bool isLeap(int y);
int getDays();
};
int PerpetualCalendar::getYear()
{
return year;
}
int PerpetualCalendar::getMonth()
{
return month;
}
int PerpetualCalendar::getDay()
{
return day;
}
void PerpetualCalendar::setYear()
{
do
{
cout<<"Input year:";
cin>>year;
if(year<0||year>9999) cout<<"Input Error!"<<endl;
}
while(year<0||year>9999);
month=1;
day=1;
}
int PerpetualCalendar::getWeek()
{
int week=getDays()%7;
week+=5;
week%=7;
return week;
}
void PerpetualCalendar::operate()
{
int i,choose;
bool chooseFlag=false;
while(1)
{
while(!chooseFlag)
{cout<<"……………………欢迎使用万年历……………………\n"<<endl;
cout<<"1.输入年,显示该年万年历"<<endl
<<"2.输入年,月,显示该月万年历"<<endl
<<"3.输入年月日,查询该日为星期几"<<endl
<<"4.退出"<<endl;
cout<<endl<<"请输入数字选择你要的操作:";
cin>>choose;
for(i=1;i<=4;i++)
{
if(choose==i) { chooseFlag=true; break;}
else chooseFlag=false;
}
if(!chooseFlag) cout<<"Error Input!"<<endl;
}
if(choose==1)
{
setYear();
printYear();
}
else if(choose==2)
{
setMonth();
printMonth();
}
else if(choose==3)
{
setDate();
printDay();
}
else if(choose==4)
{
cout<<"程序结束"<<endl;
break;
}
else
{
cout<<"错误!"<<endl;
}
chooseFlag=0;
}
}
PerpetualCalendar::PerpetualCalendar(int y,int m,int d)
{
year=y;
month=m;
day=d;
}
bool PerpetualCalendar::isLeap(int y)
{
if((y%4==0&&y%100!=0)||(y%400==0)) return true;
else return false;
}
int PerpetualCalendar::getDays()
{
int i,sumDays=0;
for(i=0;i<year;i++)
{
if(isLeap(i)) sumDays+=366;
else sumDays+=365;
}
if(isLeap(year)) daysOfMonth[2]=29;
for(i=1;i<month;i++)
sumDays+=daysOfMonth[i];
sumDays+=day;
return sumDays;
}
int main()
{
PerpetualCalendar test;
test.operate();
return 0;
}
一直会出现以下错误,有没有大佬指教一下
undefined reference to `PerpetualCalendar::printYear()
undefined reference to `PerpetualCalendar::setMonth()
undefined reference to `PerpetualCalendar::printMonth()
undefined reference to `PerpetualCalendar::setDate()
undefined reference to `PerpetualCalendar::printDay()
undefined reference to `PerpetualCalendar::PerpetualCalendar()