#include"stdio.h"
#include"stdlib.h"
#include"windows.h"
#include"conio.h"
void entry_place(int num)
{
 for(int i;i<num;i++)
 printf(" ");
}
void enter_line(int num)
{
 int i;
 for(i=0;i<num;i++)
 {
  printf("\n");
 }
}
int main()
{
 enter_line(15);
 entry_place(40);
 printf("press anykey to start");
 getchar();
 system("cls");
 int  levels=0,score=0,lines=0,num=0,col=0;
    while(1)
    {
     system("cls");
    for(int i=0;i<20;i++)
 {
  printf(" ");
 }
 printf("levels:%d",levels);
 entry_place(10);
 printf("score:%d",score);
    printf("\n");
 entry_place(20);
 printf("1---Pause");
 entry_place(9);
    printf("0---Exit");
    printf("\n");
 for(int i=0;i<80;i++)
 {
  printf("_");
 }
 enter_line(1);
 num=rand()%26;
 col=rand()%80;
 while(1)
 {
 lines++;
 if(lines>25)
 {
  lines=0;
  score-=10;
  if(score<-50)
  {
   system("cls");
   enter_line(15);
   entry_place(40);
   printf("sorry,you faile!");
   getch();
   exit(0);
  }
  break;
 }
 entry_place(col);
 printf("%c",'a'+num); 
 Sleep(180);
 printf("\b \n");
 
 if(kbhit())
 {
  char c=getch();
  if(c=='a'+num)
  {
   score+=10;
   break;
  }
 }
   }
   }
 return 0;
 }