static函数调用

非静态函数调用static函数的方式

1. 如果直接调用的话，会报错误；

2. 可以间接调用

```

test.h

 1 #ifndef _TEST_H
  2 #define _TEST_H                                                                                                                                                        
  3
  4 struct myfunc {
  5     void (*f)();
  6 };  
  7     
  8 void hello();
  9 static void world();
 10
 11 void use_static(struct myfunc *func);
 12 #endif

test.c

  1 #include <stdio.h>                                                                                                                                                     
  2 #include "test.h"
  3
  4 static void world()
  5 {   
  6     printf("This is static func.\n");
  7     return ;
  8 }
  9
 10 void hello()
 11 {
 12     world();
 13 }
 14
 15 void use_static(struct myfunc *func)
 16 {
 17     func->f = world;
 18
 19     return ;
 20 }

main.c

  1 #include <stdio.h>                                                                                                                                                     
  2 #include <stdlib.h>
  3 #include <string.h>
  4 #include "test.h"
  5
  6 int main()
  7 {   
  8     struct myfunc func;
  9     /* hello(); */
 10     //world();
 11     //
 12     use_static(&func);
 13
 14     func.f();
 15     return 0;
 16 }

```