我只是在学习类,所以我尝试了一些基本的东西。我有一个名为Month的课程,如下所示。对于我的第一个测试,我想提供一个从1到12的数字并输出月份的名字,即。 1 = 1月C++类:传递参数
class Month
{
public:
Month (char firstLetter, char secondLetter, char thirdLetter); // constructor
Month (int monthNum);
Month();
void outputMonthNumber();
void outputMonthLetters();
//~Month(); // destructor
private:
int month;
};
Month::Month()
{
//month = 1; //initialize to jan
}
void Month::outputMonthNumber()
{
if (month >= 1 && month <= 12)
cout << "Month: " << month << endl;
else
cout << "Not a real month!" << endl;
}
void Month::outputMonthLetters()
{
switch (month)
{
case 1:
cout << "Jan" << endl;
break;
case 2:
cout << "Feb" << endl;
break;
case 3:
cout << "Mar" << endl;
break;
case 4:
cout << "Apr" << endl;
break;
case 5:
cout << "May" << endl;
break;
case 6:
cout << "Jun" << endl;
break;
case 7:
cout << "Jul" << endl;
break;
case 8:
cout << "Aug" << endl;
break;
case 9:
cout << "Sep" << endl;
break;
case 10:
cout << "Oct" << endl;
break;
case 11:
cout << "Nov" << endl;
break;
case 12:
cout << "Dec" << endl;
break;
default:
cout << "The number is not a month!" << endl;
}
}
这里是我有一个问题。我想将“num”传递给outputMonthLetters函数。我该怎么做呢?该函数是无效的,但是必须有一些方法来将变量放入类中。我是否必须公开“月”变量?
int main(void)
{
Month myMonth;
int num;
cout << "give me a number between 1 and 12 and I'll tell you the month name: ";
cin >> num;
myMonth.outputMonthLetters();
}
为该函数添加一个重载有什么问题:void outputMonthLetters(unsigned int monthNumber); – celavek
[提高可读性](http://ideone.com/ve0PK) –
@Benjamin谢谢 – dukevin