在 GNU c++ 编译器中运行一个包含多个源文件的程序

I am using DEV GNU c++ compiler on windows 7 OS. I need to know how a program with more than one source file can be compiled. here is example,

#FILE1
void f1()
{
   printf("this is another file under same program");
}

#FILE2

int main()
{
   f1();
   return 0;
}

实际上我需要这个来测试静态、extern 类说明符如何处理多个文件.所以只有我现在必须学习如何在 C 中的单个程序中处理多个文件..

g++ file1.cpp file2.cpp -o program

g++ -c file1.cpp -o file1.o
g++ -c file2.cpp -o file2.o

# linking
g++ file1.o file2.o -o program