C++ 如何使用头文件从.cpp创建对象文件

我试图通过在linux终端中键入以下内容，使用g++创建一个对象文件：

user$g++-c clockType_Cayas.cpp

clockType_Cayas.h

/*文件：clockType_Cayas.h
*作者：冯·维克·卡亚斯
*日期：2019年10月27日
*/
#ifndef时钟型
#定义时钟类型
类钟型{
公众：
//设置小时、分钟或秒
无效设置小时数（整数小时）；
无效设置分钟数（整数分钟）；
无效设置秒（整数秒）；
//获得小时、分钟或秒
int getHours（）；
int getMinutes（）；
int getSeconds（）；
//获取经过的时间和剩余时间
int getElapsedTime（）；
int getRemainingTime（）；
无效比较锁（时钟类型和其他时钟）；
时钟类型（）；
时钟类型（整数小时、整数分钟、整数秒）；
私人：
国际人力资源；
int-min；
国际秒；
};
#恩迪夫

clockType_Cayas.cpp

/*文件：clockType_Cayas.cpp
*作者：冯·维克·卡亚斯
*日期：2019年10月27日
*/
#包括
#包括
#包括“clockType_Cayas.h”
使用名称空间std；
//二传手
// #####################################################
//对于clockType，设置hr、min和sec专用变量
void clockType:：setHours（int hours）{hr=hours；}
void clockType:：setMinutes（int minutes）{min=minutes；}
void clockType:：setSeconds（int seconds）{sec=seconds；}
// #####################################################
//吸气剂
// #####################################################
//对于clockType，返回hr、min和sec私有变量
int clockType:：getHours（）{return hr；}
int clockType:：getMinutes（）{return min；}
int clockType:：getSeconds（）{return sec；}
//对于clockType，返回以秒为单位的总运行时间
int clockType:：getElapsedTime（）{返回hr*60*60+分钟*60+秒；}
//对于clockType，返回总剩余时间（以秒为单位）
int clockType:：getRemainingTime（）{return 24*60*60-getElapsedTime（）；}
// #####################################################
//比较clockType的两个对象，比较它们的总运行时间
void clockType:：compareClock（clockType和otherClock）{
浮点数（浮点数a）；
float diff=abs（otherClock.getElapsedTime（）-getElapsedTime（））；//以秒为单位获取与时钟的差值
//从十进制秒到时间的转换
浮动小时、分钟、秒；
小时=diff/（60*60）；
分钟=剩余时间（小时）*60；
秒=剩余时间（分钟）*60；
小时数=静态浇铸（小时）；
分钟=静态施法（分钟）；
秒=静态施法（秒）；
不能使用与您的类相同的名称来定义clockType。这会导致issuesOh.Wow。所有这些错误都会随着您的解决方案神奇地消失…谢谢：）原因740预处理器是魔鬼。标头保护必须是完全唯一的。只有在非常罕见的情况下，您才应该使用保护elsewhere。非常罕见，以至于我真的想不出我推荐使用的任何一个。@user4581301我使用了一个联机GUID生成器，在尝试用重复的标题保护（它原来是两个库项目，每个项目都有一个utilities.h，显然是同一个保护）对一个大型（ish）项目（1000多个文件）进行排序之后。
In file included from clockType_Cayas.cpp:7:
clockType_Cayas.h:23:29: error: expected identifier before ‘&’ token
  void compareClock(clockType& otherClock);
                             ^
clockType_Cayas.h:25:12: error: expected unqualified-id before ‘)’ token
  clockType();
            ^
clockType_Cayas.h:26:12: error: expected unqualified-id before ‘int’
  clockType(int hours, int minutes, int seconds);
            ^~~
clockType_Cayas.h:26:12: error: expected ‘)’ before ‘int’
  clockType(int hours, int minutes, int seconds);
           ~^~~
            )
clockType_Cayas.h:31:1: error: abstract declarator ‘<unnamed class>’ used as declaration
 };
 ^
clockType_Cayas.cpp:12:35: error: ‘void setHours(int)’ should have been declared inside ‘::’
 void clockType::setHours(int hours) {hr = hours;}
                                   ^
clockType_Cayas.cpp: In function ‘void setHours(int)’:
clockType_Cayas.cpp:12:38: error: ‘hr’ was not declared in this scope
 void clockType::setHours(int hours) {hr = hours;}
                                      ^~
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:13:39: error: ‘void setMinutes(int)’ should have been declared inside ‘::’
 void clockType::setMinutes(int minutes) {min = minutes;}
                                       ^
clockType_Cayas.cpp: In function ‘void setMinutes(int)’:
clockType_Cayas.cpp:13:48: error: overloaded function with no contextual type information
 void clockType::setMinutes(int minutes) {min = minutes;}
                                                ^~~~~~~
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:14:39: error: ‘void setSeconds(int)’ should have been declared inside ‘::’
 void clockType::setSeconds(int seconds) {sec = seconds;}
                                       ^
clockType_Cayas.cpp: In function ‘void setSeconds(int)’:
clockType_Cayas.cpp:14:42: error: ‘sec’ was not declared in this scope
 void clockType::setSeconds(int seconds) {sec = seconds;}
                                          ^~~
clockType_Cayas.cpp:14:42: note: suggested alternative: ‘getc’
 void clockType::setSeconds(int seconds) {sec = seconds;}
                                          ^~~
                                          getc
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:21:25: error: ‘int getHours()’ should have been declared inside ‘::’
 int clockType::getHours() {return hr;}
                         ^
clockType_Cayas.cpp: In function ‘int getHours()’:
clockType_Cayas.cpp:21:35: error: ‘hr’ was not declared in this scope
 int clockType::getHours() {return hr;}
                                   ^~
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:22:27: error: ‘int getMinutes()’ should have been declared inside ‘::’
 int clockType::getMinutes() {return min;}
                           ^
clockType_Cayas.cpp: In function ‘int getMinutes()’:
clockType_Cayas.cpp:22:37: error: cannot resolve overloaded function ‘min’ based on conversion to type ‘int’
 int clockType::getMinutes() {return min;}
                                     ^~~
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:23:27: error: ‘int getSeconds()’ should have been declared inside ‘::’
 int clockType::getSeconds() {return sec;}
                           ^
clockType_Cayas.cpp: In function ‘int getSeconds()’:
clockType_Cayas.cpp:23:37: error: ‘sec’ was not declared in this scope
 int clockType::getSeconds() {return sec;}
                                     ^~~
clockType_Cayas.cpp:23:37: note: suggested alternative: ‘getc’
 int clockType::getSeconds() {return sec;}
                                     ^~~
                                     getc
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:26:31: error: ‘int getElapsedTime()’ should have been declared inside ‘::’
 int clockType::getElapsedTime() {return hr*60*60 + min*60 + sec;}
                               ^
clockType_Cayas.cpp: In function ‘int getElapsedTime()’:
clockType_Cayas.cpp:26:41: error: ‘hr’ was not declared in this scope
 int clockType::getElapsedTime() {return hr*60*60 + min*60 + sec;}
                                         ^~
clockType_Cayas.cpp:26:55: error: invalid operands of types ‘<unresolved overloaded function type>’ and ‘int’ to binary ‘operator*’
 int clockType::getElapsedTime() {return hr*60*60 + min*60 + sec;}
                                                    ~~~^~~
clockType_Cayas.cpp:26:61: error: ‘sec’ was not declared in this scope
 int clockType::getElapsedTime() {return hr*60*60 + min*60 + sec;}
                                                             ^~~
clockType_Cayas.cpp:26:61: note: suggested alternative: ‘getc’
 int clockType::getElapsedTime() {return hr*60*60 + min*60 + sec;}
                                                             ^~~
                                                             getc
clockType_Cayas.cpp: At global scope:
clockType_Cayas.cpp:29:33: error: ‘int getRemainingTime()’ should have been declared inside ‘::’
 int clockType::getRemainingTime() {return 24*60*60 - getElapsedTime();}
                                 ^
clockType_Cayas.cpp:33:29: error: variable or field ‘compareClock’ declared void
 void clockType::compareClock(clockType& otherClock) {
                             ^
clockType_Cayas.cpp:33:41: error: ‘otherClock’ was not declared in this scope
 void clockType::compareClock(clockType& otherClock) {
                                         ^~~~~~~~~~
clockType_Cayas.cpp:61:21: error: expected id-expression before ‘(’ token
 clockType::clockType() {
                     ^
clockType_Cayas.cpp:67:21: error: expected id-expression before ‘(’ token
 clockType::clockType(int hours, int minutes, int seconds) {