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/*
@Author:Mr.Suppakit Thongdee
@Website: www.sourcecode.in.th
*/
#include <stdio.h>
#include <conio.h>

void display_menu(int selected){
	clrscr();
	char menu[4] = "    ";
	menu[selected] = '>';

	printf("\t Main Menu [ENTER to select, ESC to exit]\n");
	printf("\t ----------------------------------------\n");
	printf("\t %cFirst menu \n",menu[0]);
	printf("\t %cSecond menu\n",menu[1]);
	printf("\t %cThird menu \n",menu[2]);
	printf("\t %cForth menu \n",menu[3]);
	printf("\t ----------------------------------------\n");
}

void menu1(){
	clrscr();
	printf("This is First program \n\t press any key to exit");
	getch();
}

void menu2(){
	clrscr();
	printf("This is Second program \n\t press any key to exit");
	getch();
}

void menu3(){
	clrscr();
	printf("This is Third program \n\t press any key to exit");
	getch();
}

void menu4(){
	clrscr();
	printf("This is Forth program \n\t press any key to exit");
	getch();
}

void main(){
	int ch;
	int selected = 0; //0-3 for 4 menu

	clrscr();
	//ESC=27, Spacebar=32, Enter=13
	//arrow key UP=0,72
	//arrow key Down=0,80


	do{
		//display menu
		display_menu(selected);

		//get keypress
		ch = getch();
		if(ch==0){ //check function key or not
			ch = getch();
			if(ch==72){ //check arrow key UP
				selected--;
			}else if(ch==80){ //check arrow key DOWN
				selected++;
			}
			//update select menu value 0 to 3
			if(selected<0){
				selected = 3;
			}else if(selected>3){
				selected = 0;
			}
			display_menu(selected);

		}else if(ch==13){ //ENTER

			//Call select program
			switch(selected){
				case 0: menu1(); break;
				case 1: menu2(); break;
				case 2: menu3(); break;
				case 3: menu4(); break;
			}

		}


	}while(ch!=27); //exit when press ESC on keyboard


}