Snake game.c

 #include<STDLIB.H>

#include<stdio.h>
#include<conio.h>
#include<time.h>
int height =23 ,width =78,x,y,fruitx,fruity,score,gameend,flag;
int tailx[100],taily[100];
int piece=0;
      //x = height and y= width
void makelogic(){
   int i ;
   int prevx,prevy,prev2x,prev2y;
   prevx=tailx[0];
   prevy=taily[0];
   tailx[0]=x;
   taily[0]=y;
   for(i =1;i <=piece;i++){
    prev2x=tailx[i];
    prev2y=taily[i];
    tailx[i]=prevx;
    taily[i]=prevy;
     prevx=prev2x;
     prevy=prev2y;
   }
   switch(flag){
    case 1:
      x--;
    break;
    case 2:
      x++;
    break;
    case 3:
     y--;
    break;
    case 4:
	y++;
    break;
    }
    if(x==0||y==0||x==height||y==width){
      gameend = 1;
    }
    if(x==fruitx && y == fruity){
	 label3:
    fruitx = rand ()%23 ;
    if (fruitx==0){
      goto label3;
    }
       label4:
    fruity = rand ()%78 ;
    if (fruity==0)
      goto label4;

    score++;
    piece++;
    }

}
void input(){
      if (kbhit()){
	 switch (getch()){
	 case 'w':
	 flag = 1;
	 break;
	 case 's':
	 flag = 2;
	 break;
	 case 'a':
	 flag = 3;
	 break;
	 case 'd':
	 flag = 4;
	 break;

      }
    }
}

void setup(){  time_t t;


    x=height/2;
    y=width/2;


   srand((unsigned) time(&t));


    label1:
    fruitx = rand ()%23 ;
    if (fruitx==0){
      goto label1;
    }
       label2:
    fruity = rand ()%78 ;
    if (fruity==0){
      goto label2;
    }
     gameend= 0;
     score = 0;

 }
void draw(){
int i,j,k,ch;
     system("cls");
    for (i =0 ; i<= height;i++){
      for (j=0;j<=width;j++){
	if(i == 0 || j==0 ||  i==height || j==width){
	     printf("\033[46;36;3m*");
	   }
	  else{
	  if(i == x && j==y){
	   printf("\033[42;1;3m ");
	  }
	  else if(i == fruitx && j== fruity){
	    printf("\033[41;31;2m0");
	  }
	  else{
	   ch = 0;
	   for(k=1;k<=piece;k++){
	       if(i==tailx[k] && j==taily[k]){
		  printf("\033[42;1;3mo");
		  ch=1;
	       }
	     }
	   if(ch==0){
	   printf("\033[40;1;3m "); }
	   }
      }
    }
    printf("\n");
   }
   printf("score = %d",score);
}

void gameover(){
int i;
printf("\033[31;1;3m");
printf("\033[40;1;3m");
   system("cls");

 for(i=0;i<=10;i++){
 printf("_");
 }
  printf("\t\t\t  /\\ \t \t   |\\        /| |----------");
 printf("\n");
 printf("|\t\t\t        /    \\ \t\t   | \\      / | |");
  printf("\n");
 printf("|\t\t\t      /        \\ \t   |  \\    /  | |");
 printf("\n");
 printf("|");
 printf("         _________\t    /            \\         |   \\  /   | |__________");

 printf("\n");
 printf("|         |        |      /________________\\       |    \\/    | |");
 printf("\n");
 printf("|         |        |    /                    \\     |\t      | |");
 printf("\n");
 printf("|         |        |  /                        \\   |\t      | |");
 printf("\n|_________|        |/                            \\ |\t      | |__________");
 printf("\n\n\n");
 printf("\n\t\t __________            \t \t\t|__________");
 printf("\n\t\t|\t\t|\\              |\t|          |");
 printf("\n\t\t|\t\t|  \\            |\t|          |");
 printf("\n\t\t|\t\t|    \\          |\t|          |");
 printf("\n\t\t|__________     |      \\        |\t|          |");
 printf("\n\t\t|\t\t|        \\      |\t|          |");
 printf("\n\t\t|\t\t|          \\    |\t|          |");
 printf("\n\t\t|\t\t|            \\  |\t|          |");
 printf("\n\t\t|__________     |              \\|\t|----------");
 printf("\033[31;1;4m score = %d",score);
getchar();
 return 0;

}
int  main(){
int z;
      setup();
      while(gameend != 1){
      //sleep(1);
      input();
       draw();
       makelogic();
       //sleep(1);
       }
       if(gameend=1){
	  gameover();
       }
     getchar();
//  return 0;
}