g++ 多文件编译

命令： g++ main.cpp head.cpp -o main

最好的文件是使makefile在linux里面

---------------------------------

head.h

---------------------------------

#ifndef HEAD_H

#define HEAD_H

# include<iostream>

# include<string>

using namespace std;

class test

{

public:

        test(string & str);

        void print(void);

private:

        string s;

};

#endif

---------------------------------

head.cpp

---------------------------------

# include<iostream>

# include<string>

# include"head.h"

using namespace std;

test::test(string& str0)

{

        s = str0;

}

void test::print(void)

{

        cout<<"this is a test:"<<endl;

        cout<<s<<endl;

}

---------------------------------

main.cpp

---------------------------------

# include"head.h"

using namespace std;

int main(void)

{

        string str1("you are very good");

        test a(str1);

        a.print();

        return 0;

}