else if(key>oldkey)
printf("%c Go up!...stop in %c floor.",24,key);
else
printf("%c Go down!...stop in %c floor.",25,key);
oldkey=key;
break;
case '3':
if(key==oldkey)
printf(" %c ok you are here",22);
else if(key>oldkey)
printf("%c Go up!...stop in %c floor.",24,key);
else
printf("%c Go down!...stop in %c floor.",25,key);
oldkey=key;
break;
case '4':
if(key==oldkey)
printf(" %c ok you are here",22);
else if(key>oldkey)
printf("%c Go up!...stop in %c floor.",24,key);
else
printf("%c Go down!...stop in %c floor.",25,key);
oldkey=key;
break;
case '5':
if(key==oldkey)
printf(" %c ok you are here",22);
else if(key>oldkey)
printf("%c Go up!...stop in %c floor.",24,key);
else
printf("%c Go down!...stop in %c floor.",25,key);
oldkey=key;
break;
case '6':
if(key==oldkey)
printf(" %c ok you are here",22);
else if(key>oldkey)