Thread: How to make a menu that uses arrow keys

My program uses a menu that easily helps a person to navigate trough out it but im stuck on a part and i cant figure it out. i cant go to menu3 with the arrows (P.S please only use c code not c++)

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>


void sleep(long int interval)
{
for(int i=0;i<interval*1000;i++);
}


void menu();




unsigned char a;


char MenuPt1();
char MenuPt2();
char MenuPt3();


//////////////////////////////////////////////////////////////////////////////
char MenuPt1()
{

system("cls");
printf("WHAT DO YOU WANT TO DO?\n\n");
printf("%c",218);
for(int i=0;i<11;i++)
{
printf("%c",196);
}
printf("%c\n",191);
printf("%cPLAY A SONG",179);
printf("%c\n",179);
printf("%c",192);
for(int i=0;i<11;i++)
{
printf("%c",196);
}
printf("%c\n",217);
printf("\n");

printf(" LISTEN TO A SONG\n\n\n");
printf(" LEARN A SONG.\n\n\n");
printf(" PRESS ESC TO EXIT");

if (a==13){printf("q");}
}
///////////////////////////////////////////////////////////////////////////////
char MenuPt2()
{
system("cls");
printf("WHAT DO YOU WANT TO DO?\n\n");
printf("\n PLAY A SONG\n\n");

printf("%c",218);
for(int i=0;i<16;i++)
{
printf("%c",196);
}
printf("%c\n",191);
printf("%cLISTEN TO A SONG",179);
printf("%c\n",179);
printf("%c",192);
for(int i=0;i<16;i++)
{
printf("%c",196);
}
printf("%c\n",217);
printf("\n");

printf(" LEARN A SONG.\n\n\n");
printf(" PRESS ESC TO EXIT");}
///////////////////////////////////////////////////////////////////////////////
void menu()
{
int menu1choice;
int var1;
int var2;
int var3;
int A;
int B;
int C;


system("cls");
printf("WHAT DO YOU WANT TO DO?\n\n");


printf("%c",218);
for(int i=0;i<11;i++)
{
printf("%c",196);
}
printf("%c\n",191);
printf("%cPLAY A SONG",179);
printf("%c\n",179);
printf("%c",192);
for(int i=0;i<11;i++)
{
printf("%c",196);
}
printf("%c\n",217);
printf("\n");

printf(" LISTEN TO A SONG\n\n\n");
printf(" LEARN A SONG.\n\n\n");
printf(" PRESS ESC TO EXIT");}
////////////////////////////////////////////////////////////////////////////////


int main()
{
printf(" %c",201);//print left top corner
for(int i=0;i<20;i++)
{
printf("%c",205);sleep(10000);
}
printf("%c\n",187);//print top right corner
printf(" %cWELCOME TO MUSISCORE",186);//print vertical borders
printf("%c\n",186);
printf(" %c",200);//print bottom left corner
for(int i=0;i<20;i++)
{
printf("%c",205);sleep(10000);
}
printf("%c\n",188);//print bottom right corner
printf("\n");
printf("Hello. Welcome to Musiscore\n");
printf("Here is where you learn to play music\n");
printf("Press ENTER key to continue...\n");
getchar();
menu();


while(a != 27)
{

//system("cls");
a=getch();
/*for detect the function\arrow keys
we must call the getch() again
testing if a is '0' or '0xE0'
if (a==0 || a==0xE0) a=getch();*/

if (a==27) //ESC for exit the 'while'
break;
else if (a==72)
{system("cls");
MenuPt1();}
else if (a==80)
{system("cls");
MenuPt2();}
else
printf("",(int) a);
}
return 0;
}

CAN YOUR PROGRAM YELL AT ME SOME MORE?

Using the arrow keys is not easy. It depends on what platform the code will run on, and the code will only work on that platform. i.e. Code for windows is different than code for Macs or Linux, etc.

The first step is to write code that can get a key - try reading this, you may be able to adapt the code:
FAQ > How can I get input without having the user hit [Enter]? - Cprogramming.com

The second step is detecting the arrow key. When you type a functional key while your getChar() function is executing, you may see some weird results. Function keys (like the arrows) are a combination of key codes. There is a code that tells you a function key is coming first, and then a second that is actually the arrow direction pushed. I don't remember the codes offhand so you will have to test to find out what they are first, then use them in your code, or maybe someone else will come along.

Oh and Posting code? Read this first!