如何用“C语言”实现“选项有功能的文本菜单”？

C语言中如何实现选项菜单的功能？

#include#include void hello(){printf("hello world
");}int main(){ int x; while (1) { printf("-------------操作选项-----------
"); printf("1:返回菜单
"); printf("2:退出程序
"); printf("3:执行操作
"); printf("--------------------------------
"); printf("按数字键选择要执行的操作: "); scanf("%d",&x); printf("
"); //输入2跳出循环，退出程序 if(x==2) break; switch(x) { case 1: break; //输入1，跳出switch语句，进入下一次循环 case 3: hello();break; default: //数字输入错误，跳出siwtch语句，进入下一次循环 printf("输入的数字不正确
"); break; } } return 0;}
说明：有3个选项，1是用返回菜单，2是用于退出程序，3是用于执行相关的操作，这里只是一个示例，所以将要执行的操作，编写成了一个输出hello world的函数。

#include
#include
#include
#define Key_DOWN 0x5100
#define Key_UP 0x4900
#define Key_ESC 0x011b
#define Key_ALT_F 0x2100
#define Key_ALT_X 0x2d00
#define Key_ENTER 0x1c0d

void box(int startx,int starty,int high,int width);

main()
{
int i,key,x,y,l;
char *menu[] = {"File","Edit","Run","Option","Help","Setup","Zoom","Menu"};
char *red[] = { "F","E","R","O","H","S","Z","M" };
char *f[] = {"Load file", "Save file", "Print", "Modify ", "Quit A1t_x"};
char buf[16*10*2],buf1[16*2];
while(1)
{
textbackground(BLUE);
clrscr();
textmode(C80);
window(1,1,80,1);
textbackground(LIGHTGRAY);
textcolor(BLACK);
clrscr();
gotoxy(5,1);
for(i=0,l=0;i<8;i++)
{
x=wherex();
y=wherey();
cprintf("%s",menu[i]);
l=strlen(menu[i]);
gotoxy(x,y);
textcolor(RED);
cprintf("%s",red[i]);
x=x+l+5;
gotoxy(x,y);
textcolor(BLACK);
}
gotoxy(5,1);
key=bioskey(0);
switch (key){
case Key_ALT_X:
exit(0);
case Key_ALT_F:
{
textbackground(BLACK);
textcolor(WHITE);
gotoxy(5,1);
cprintf("%s",menu[0]);
gettext(5,2,20,12,buf);
window(5,2,20,9);
textbackground(LIGHTGRAY);
textcolor(BLACK);
clrscr();
box(1,1,7,16);
for(i=2;i<7;i++)
{ gotoxy(2,i);
cprintf("%s",f[i-2]);
}
gettext(2,2,18,3,buf1);
textbackground(BLACK);
textcolor(WHITE);
gotoxy(2,2);
cprintf("%s",f[0]);
gotoxy(2,2);
y=2;

while ((key=bioskey(0))!=Key_ALT_X)
{
if ((key==Key_UP)||(key==Key_DOWN))
{
puttext(2,y,18,y+1,buf1);
if (key==Key_UP)
y=y==2?6:y-1;
else
y=y==6?2:y+1;
gettext(2,y,18,y+1,buf1);
textbackground(BLACK);
textcolor(WHITE);
gotoxy(2,y);
cprintf("%s",f[y-2]);
gotoxy(2,y);
}
else
if (key==Key_ENTER)
{
switch ( y-1 ){
case 1:
break;
case 2:
break;
case 3:
break;
case 4:
break;
case 5:
exit(0);
default:
break;
}
break;
}
else
if (key==Key_ESC)
break;
}
if (key==Key_ALT_X) exit(0);
break;
}
}
}
}

void box(int startx,int starty,int high,int width)
{ int i;
gotoxy(startx,starty);
putch(0xda);
for (i=startx+1;i<width;i++) putch(0xc4);
putch(0xbf);
for( i=starty+1;i<high;i++)
{
gotoxy(startx,i);putch(0xb3);
gotoxy(width,i);putch(0xb3);
}
gotoxy(startx,high);
putch(0xc0);
for (i=startx+1;i<width;i++) putch(0xc4);
putch(0xd9);
return ;
}

1、直接用输出即可实现、

2、例程：

#include<stdio.h>
#include <stdlib.h>
void hello()
{
    printf("hello world
");
}
int main()
{
 int x;
 while (1)
 {
  printf("-------------操作选项-----------
");
  printf("1:返回菜单 
");
  printf("2:退出程序 
");
  printf("3:执行操作 
");
  printf("--------------------------------
");
 
  printf("按数字键选择要执行的操作: ");
  scanf("%d",&x);
  printf("
");
  //输入2跳出循环，退出程序
  if(x==2)
      break;
  
  switch(x)
  {
  case 1:  break; //输入1，跳出switch语句，进入下一次循环
  case 3:  hello();break;  
  default:  //数字输入错误，跳出siwtch语句，进入下一次循环
      printf("输入的数字不正确
");
      break;
  }
 }
 return 0;
}

#include <process.h>
#include <dos.h>
#include <conio.h>
#define Key_DOWN 0x5100
#define Key_UP 0x4900
#define Key_ESC 0x011b
#define Key_ALT_F 0x2100
#define Key_ALT_X 0x2d00
#define Key_ENTER 0x1c0d

void box(int startx,int starty,int high,int width);

main()
{
int i,key,x,y,l;
char *menu[] = {"File","Edit","Run","Option","Help","Setup","Zoom","Menu"};
char *red[] = { "F","E","R","O","H","S","Z","M" };
char *f[] = {"Load file", "Save file", "Print", "Modify ", "Quit A1t_x"};
char buf[16*10*2],buf1[16*2];
while(1)
{
textbackground(BLUE);
clrscr();
textmode(C80);
window(1,1,80,1);
textbackground(LIGHTGRAY);
textcolor(BLACK);
clrscr();
gotoxy(5,1);
for(i=0,l=0;i<8;i++)
{
x=wherex();
y=wherey();
cprintf("%s",menu[i]);
l=strlen(menu[i]);
gotoxy(x,y);
textcolor(RED);
cprintf("%s",red[i]);
x=x+l+5;
gotoxy(x,y);
textcolor(BLACK);
}
gotoxy(5,1);
key=bioskey(0);
switch (key){
case Key_ALT_X:
exit(0);
case Key_ALT_F:
{
textbackground(BLACK);
textcolor(WHITE);
gotoxy(5,1);
cprintf("%s",menu[0]);
gettext(5,2,20,12,buf);
window(5,2,20,9);
textbackground(LIGHTGRAY);
textcolor(BLACK);
clrscr();
box(1,1,7,16);
for(i=2;i<7;i++)
{ gotoxy(2,i);
cprintf("%s",f[i-2]);
}
gettext(2,2,18,3,buf1);
textbackground(BLACK);
textcolor(WHITE);
gotoxy(2,2);
cprintf("%s",f[0]);
gotoxy(2,2);
y=2;

while ((key=bioskey(0))!=Key_ALT_X)
{
if ((key==Key_UP)||(key==Key_DOWN))
{
puttext(2,y,18,y+1,buf1);
if (key==Key_UP)
y=y==2?6:y-1;
else
y=y==6?2:y+1;
gettext(2,y,18,y+1,buf1);
textbackground(BLACK);
textcolor(WHITE);
gotoxy(2,y);
cprintf("%s",f[y-2]);
gotoxy(2,y);
}
else
if (key==Key_ENTER)
{
switch ( y-1 ){
case 1:
break;
case 2:
break;
case 3:
break;
case 4:
break;
case 5:
exit(0);
default:
break;
}
break;
}
else
if (key==Key_ESC)
break;
}
if (key==Key_ALT_X) exit(0);
break;
}
}
}
}

void box(int startx,int starty,int high,int width)
{ int i;
gotoxy(startx,starty);
putch(0xda);
for (i=startx+1;i<width;i++) putch(0xc4);
putch(0xbf);
for( i=starty+1;i<high;i++)
{
gotoxy(startx,i);putch(0xb3);
gotoxy(width,i);putch(0xb3);
}
gotoxy(startx,high);
putch(0xc0);
for (i=startx+1;i<width;i++) putch(0xc4);
putch(0xd9);
return ;
}

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