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c语言菜单函数选择 c语言使用菜单选择程序

IT技术函数

在C语言中switch(MenuSelect())是什么意思啊switch()是C语言中多项选择功能 ， 
MenuSelect()函数的返回值表示所选择的值，然后在switch中去找对应的项，然后执行其后续语句
求一个C语言菜单函数的程序？1、对于窗口组件菜单，需要根据不同平台，通过图形编程接口，进行菜单的编制 。
例程：
#includestdio.h
#includegraphics.h
#includeconio.h
void main()
{
char str;
int i,k,choice=1;
int gd=DETECT,gm;
initgraph(gd,gm," ");
setbkcolor(2);
settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
outtextxy(140,150,"B. The Digital Clock.");
outtextxy(140,180,"C. Exit.");
setlinestyle(0,0,3);
rectangle(170,115,370,145);
/*按上下键选择所需选项*/
for(i=1;i=100;i++)
{
str=getch();
if(str==72)
{
--choice;
if(choice==0)choice=3;
}
if(str==80)
{
++choice;
if(choice==4)choice=1;
}
if(str==13)break; ／＊按回车键确认＊／
/*画图做菜单*/
【c语言菜单函数选择 c语言使用菜单选择程序】cleardevice();
switch(choice)
{ case 1: setlinestyle(0,0,3);
rectangle(170,115,400,145);
settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
settextstyle(3,0,3);
outtextxy(140,150,"B. The Digital Clock.");
outtextxy(140,180,"C. Exit.");
break;
case 2: setlinestyle(0,0,3);
rectangle(170,145,400,175);
settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
settextstyle(3,0,3);
outtextxy(140,150,"B. The Digital Clock.");
settextstyle(3,0,3);
outtextxy(140,180,"C. Exit.");
break;
case 3: settextstyle(3,0,3);
outtextxy(140,120,"A. The Mock Clock.");
outtextxy(140,150,"B. The Digital Clock.");
settextstyle(3,0,3);
outtextxy(140,180,"C. Exit.");
setlinestyle(0,0,3);
rectangle(170,175,400,205);
break;
}
}
if(i=100)exit(0);／＊如果按键超过100次退出＊／
switch(choice)/*这里引用函数，实现所要的功能*/
{
case 1: cleardevice();
setbkcolor(4);
settextstyle(3,0,4);
outtextxy(160,120,"No.1 have not built."); break;
case 2: cleardevice();
setbkcolor(4);
settextstyle(3,0,4);
outtextxy(160,150,"No.2 have not built.");
break;
case 3: exit(0);
}
getch();
closegraph();
}
2、对于命令行菜单，直接通过不断刷新输出来模拟菜单行为 。
例程：
#include stdio.h
#include stdlib.h
#include string.h
int n,t,k;
int m;
char s1[20],s2[20],c;
char **l;
char *num[]={"one","two","three","four","five","six","seven","eight","nine","ten"};
void menu()
{
printf("\n\n\t\t*******************************************************\n");
printf("\t\t**1.查找字符串S1中S2出现的次数**\n");
printf("\t\t**2.统计字符串中大小写字母，数字出现的次数**\n");
printf("\t\t**3.将数字翻译成英语**\n");
printf("\t\t**4.结束**\n");
printf("\t\t*******************************************************\n");
printf("\t\t您的输入：");
fflush(stdin);
scanf("%d",n);
}
void check()
{
char a[20],b[20];
int j=0,k,m,l=0;
int t=0,n=0;
printf("请输入主字符串：\n");
scanf("%s",a);
k=strlen(a);
printf("请输入子字符串：\n");
scanf("%s",b);
m=strlen(b);
for(n=0;nk;n++)
if(a[n]==b[0])
{
j++; /*记录相同的字符数*/
do
{
if(a[++n]==b[++t])
{
j++;
if(j==m)
{
l++;/*子字符串相同数*/
j=0;/*判断后相同字符数归零*/

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