/* Note:Your choice is C IDE */
#include "stdio.h"
int main()
{ void print_star();               
  void print_message();            
  print_star();                    
  print_message();                 
  print_star();                    
  return 0;
}                                  ././始终没能理解，空类型没有参数值传递，，，，“为什么”能实现功能传递呢？


void print_star()                  
{
    printf("***************\n");  
}

void print_message()              
{
    printf(" 张某某，你好！\n");  
}