原创 [转]通过结构体和函数指针进行菜单操作的一个实例[非常实用！]

前天帮同学写了一个菜单，感觉对不太了解函数指针的同学来说有点借鉴意义,原程序如下，可以直接放在vc++6.0环境下运行，移植到单片机上也是非常的简单的！

程序如下：

\\-------------------------------------------------------------------------

＃i nclude<stdio.h>
void fun0(void){
 printf("\tYou are right!\n\tHere is fun0()!\n");
}
void fun1(void){
 printf("\tYou are right!\n\tHere is fun1()!\n");
}
void fun2(void){
 printf("\tYou are right!\n\tHere is fun2()!\n");
}
void fun3(void){
 printf("\tYou are right!\n\tHere is fun3()!\n");
}
void fun4(void){
 printf("\tYou are right!\n\tHere is fun4()!\n");
}
void fun5(void){
 printf("\tYou are right!\n\tHere is fun5()!\n");
}

struct {    //声明一个结构体
 void (*fun)(void); //声明一个函数指针
 char *tip;
}CmdTip[] = {   //结构体初始化
    { fun0, "fun0() test"},   
    { fun1, "fun1() test"},
    { fun2, "fun2() test"},
    { fun3, "fun3() test"},
    { fun4, "fun4() test"},
    { fun5, "fun5() test"},
    { 0, 0}      
   };

void main(void){
  int idx,i;
  while(1){   
   printf("\n\n\n\t=====================\n");
   printf("\t|        菜单       |\n");
   printf("\t---------------------\n");
   for(i=0; CmdTip.fun!=0; i++)
    printf("\t| %2d:  %s  |\n", i, CmdTip.tip);
   printf("\t=====================\n\n");
   printf("请输入一个菜单编号并按ENTER键:");
   scanf("%d",&idx);  
   if(idx<i)
   {
    (*CmdTip[idx].fun)();
   }
   else printf("\t你输入了一个错误的数字:%d；请重新输入！\n", idx);
  }
}
\\-------------------------------------------------------------------------