開始時程式：
ngnsvr9 [** none **]/home/xionghailong/c++ $ cat orig.cpp
#include
using namespace std;
struct node
;node* addnode (node* p_list, int value)
void printlist(const node* p_list)
}int main()
printlist(p_list);
}當工程**很大時，**的可讀性會大大降低；我們可以將**分解為：linkedlist.cpp，linkedlist.h，orig.cpp
linkedlist.cpp：
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ cat linkedlist.cpp
#include
#include "linkedlist.h"
using namespace std;
node* addnode (node* p_list, int value)
void printlist(const node* p_list)
}linkedlist.h：
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ cat linkedlist.h
struct node
;node* addnode (node* p_list, int value);
void printlist(const node* p_list);
orig.cpp:
void printlist(const node* p_list);ngnsvr9 [** none **]/home/xionghailong/c++/orig $ cat orig.cpp
#include
#include "linkedlist.h"
using namespace std;
int main()
printlist(p_list);
}可以直接用如下命令進行執行：
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ g++ orig.cpp linkedlist.cpp
in file included from orig.cpp:2:
linkedlist.h:8:36: warning: no newline at end of file
orig.cpp:17:2: warning: no newline at end of file
in file included from linkedlist.cpp:2:
linkedlist.h:8:36: warning: no newline at end of file
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ ls
a.out linkedlist.cpp linkedlist.cpp.bak linkedlist.h linkedlist.h.bak makefile.txt makefile.txt.bak orig.cpp orig.cpp.bak
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ ./a.out
enter value for list node: 2
enter value for list node: 2
enter value for list node: 2
enter value for list node: 2
enter value for list node: 23
enter value for list node: 3
enter value for list node: 3
enter value for list node: 3
enter value for list node: 3
enter value for list node: 333
33323
2222
採用makefile檔案可以更加直接明了：
makefile檔案如下：
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ cat makefile.txt
all: orig
orig: orig.o linkedlist.o
g++ orig.o linkedlist.o -o orig
orig.o: orig.cpp
g++ -c orig.cpp
linkedlist.o: linkedlist.cpp
g++ -c linkedlist.cpp
clean:
rm -rf *o orig
執行：ngnsvr9 [** none **]/home/xionghailong/c++/orig $ make -f makefile.txt
g++ -c orig.cpp
in file included from orig.cpp:2:
linkedlist.h:8:36: warning: no newline at end of file
orig.cpp:17:2: warning: no newline at end of file
g++ -c linkedlist.cpp
in file included from linkedlist.cpp:2:
linkedlist.h:8:36: warning: no newline at end of file
g++ orig.o linkedlist.o -o orig
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ ls
a.out linkedlist.cpp linkedlist.cpp.bak linkedlist.h linkedlist.h.bak linkedlist.o makefile.txt makefile.txt.bakorigorig.cpp orig.cpp.bak orig.o
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ ./orig
enter value for list node: 2
enter value for list node: 2
enter value for list node: 1
enter value for list node: 2
enter value for list node: 3
enter value for list node: 1
enter value for list node: 23
enter value for list node: 4
enter value for list node: 5
enter value for list node: 56565
42313
2122
生成了可執行檔案orig
執行clean刪除.o 和可執行檔案
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ make -f makefile.txt clean
rm -rf *o orig
ngnsvr9 [** none **]/home/xionghailong/c++/orig $ ls
a.out linkedlist.cpp linkedlist.cpp.bak linkedlist.h linkedlist.h.bak makefile.txt makefile.txt.bak orig.cpp orig.cpp.bak
希望對大家能有所幫助。
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