通过结构体和函数指针进行菜单操作的一个实例

黑衣人

通过结构体和函数指针进行菜单操作的一个实例 [复制链接]

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); } } \\-------------------------------------------------------------------------------