Linux C程序多文件编译

在Linux平台C编程，实现求两数最大值和两数之和的功能
1.编写add.c

wys@DESKTOP-2OU3HRV:~/mycode/day02$ vi add.c

  1 int add(int x,int y)
  2 {
  3     return x + y;
  4 }      

2.编写头文件add.h

wys@DESKTOP-2OU3HRV:~/mycode/day02$ vi add.h

  1 int add(int x,int y);

3.编写max.c

wys@DESKTOP-2OU3HRV:~/mycode/day02$ vi max.c

  1 int max(int x,int y)
  2 {
  3     return x + y;
  4 }

4.编写max.h

wys@DESKTOP-2OU3HRV:~/mycode/day02$ vi max.h

  1 int max(int x,int y);

5.编写main.c

wys@DESKTOP-2OU3HRV:~/mycode/day02$ vi main.c

  1 #include
  2 #include"add.h"
  3 #include"max.h"
  4 int main()
  5 {
  6     int a = 2;
  7     int b = 3;
  8     printf("a + b=%dn",add(a,b));
  9     printf("max=%dn",max(a,b));
 10     return 0;
 11 }
~          

6.分布编译链接

wys@DESKTOP-2OU3HRV:~/mycode/day02$ ls
add.c  add.h  main.c  max.c  max.h
wys@DESKTOP-2OU3HRV:~/mycode/day02$ gcc -c add.c
wys@DESKTOP-2OU3HRV:~/mycode/day02$ gcc -c max.c
wys@DESKTOP-2OU3HRV:~/mycode/day02$ gcc -c main.c
wys@DESKTOP-2OU3HRV:~/mycode/day02$ ls
add.c  add.h  add.o  main.c  main.o  max.c  max.h  max.o
wys@DESKTOP-2OU3HRV:~/mycode/day02$ gcc -o main main.o add.o max.o
wys@DESKTOP-2OU3HRV:~/mycode/day02$ ls
add.c  add.h  add.o  main  main.c  main.o  max.c  max.h  max.o
wys@DESKTOP-2OU3HRV:~/mycode/day02$ ./main
a + b=5
max=5
wys@DESKTOP-2OU3HRV:~/mycode/day02$

7.一步编译

wys@DESKTOP-2OU3HRV:~/mycode/day02$ ls
add.c  add.h  main  main.c  max.c  max.h
wys@DESKTOP-2OU3HRV:~/mycode/day02$ ./main
a + b=5
max=5
wys@DESKTOP-2OU3HRV:~/mycode/day02$