[問題] 教科書例子class介面實作分開不能compile的問題
用的是visual c++ 6.0, 最近在看class 介面實作分離的部分, 看到一個教科書的例子:
就是輸出設定的時間, 用軍用格式 08:00, 19:20 輸出和 通用格式 08:00 AM 07:20 PM輸出 這樣
內容很簡單，但是我直接用教科書光碟裡的程式執行竟沒辦法使用 因此想請問一下。
以下是程式碼,os是windows:
// Fig. 6.5: time1.h
// Declaration of the Time class.
// Member functions are defined in time1.cpp
// prevent multiple inclusions of header file
#ifndef TIME1_H
#define TIME1_H
// Time abstract data type definition
class Time {
public:
Time(); // constructor
void setTime( int, int, int ); // set hour, minute, second
void printMilitary(); // print military time format
void printStandard(); // print standard time format
private:
int hour; // 0 - 23
int minute; // 0 - 59
int second; // 0 - 59
};
#endif
_______________以上是class的宣告定義，存在time1.h的檔名下
// Fig. 6.5: time1.cpp
// Member function definitions for Time class.
#include <iostream>
using std::cout;
#include "time1.h"
// Time constructor initializes each data member to zero.
// Ensures all Time objects start in a consistent state.
Time::Time() { hour = minute = second = 0; }
// Set a new Time value using military time. Perform validity
// checks on the data values. Set invalid values to zero.
void Time::setTime( int h, int m, int s )
{
hour = ( h >= 0 && h < 24 ) ? h : 0;
minute = ( m >= 0 && m < 60 ) ? m : 0;
second = ( s >= 0 && s < 60 ) ? s : 0;
}
// Print Time in military format
void Time::printMilitary()
{
cout << ( hour < 10 ? "0" : "" ) << hour << ":"
<< ( minute < 10 ? "0" : "" ) << minute;
}
// Print time in standard format
void Time::printStandard()
{
cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
<< ":" << ( minute < 10 ? "0" : "" ) << minute
<< ":" << ( second < 10 ? "0" : "" ) << second
<< ( hour < 12 ? " AM" : " PM" );
}
_________以上是class的public函示成員，存在time1.cpp的檔名下
// Fig. 6.5: fig06_05.cpp
// Driver for Time1 class
// NOTE: Compile with time1.cpp
#include <iostream>
using std::cout;
using std::endl;
#include "time1.h"
// Driver to test simple class Time
int main()
{
Time t; // instantiate object t of class time
cout << "The initial military time is ";
t.printMilitary();
cout << "\nThe initial standard time is ";
t.printStandard();
t.setTime( 13, 27, 6 );
cout << "\n\nMilitary time after setTime is ";
t.printMilitary();
cout << "\nStandard time after setTime is ";
t.printStandard();
t.setTime( 99, 99, 99 ); // attempt invalid settings
cout << "\n\nAfter attempting invalid settings:\n"
<< "Military time: ";
t.printMilitary();
cout << "\nStandard time: ";
t.printStandard();
cout << endl;
return 0;
}
______________以上main()存在Fig06_05.cpp的檔名下_____________
我把這三個檔案都放在c的同一個資料夾下後執行main() 結果error:
Fig06_05.obj : error LNK2001: unresolved external symbol "public: void __
thiscall Time::setTime(int,int,int)" (?setTime@Time@@QAEXHHH@Z)
Fig06_05.obj : error LNK2001: unresolved external symbol "public: void __
thiscall Time::printStandard(void)" (?printStandard@Time@@QAEXXZ)
Fig06_05.obj : error LNK2001: unresolved external symbol "public: void __
thiscall Time::printMilitary(void)" (?printMilitary@Time@@QAEXXZ)
Fig06_05.obj : error LNK2001: unresolved external symbol "public: __
thiscall Time::Time(void)" (??0Time@@QAE@XZ)
Debug/Fig06_05.exe : fatal error LNK1120: 4 unresolved externals
Error executing link.exe.
Fig06_05.exe - 5 error(s), 0 warning(s)
三個都放c下同一個資料夾裡後執行main()，結果如上，而且還是教科書的，都沒改。
請問是沒有一起compile到嗎?
這邊沒解決就沒辦法繼續自讀下去，拜託各方高手幫忙一下，謝謝。
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