char a,aold; 
int x;
void setup()
{
fill(0);  
x=floor(random(27))+65;
a=char(x);
textFont(Arial,23);
text(a,50,60);
}
void draw()
{
if(keyPressed)
{

  background(204);

x=floor(random(27))+65;
//print(x," ");
a=char(x);
//print(a," ");
//text(aold,50,20);
//text(key,50,40);
text(a,50,60);


if (key==aold) text("yes",50,80);
else
 text("no",50,80);
delay(500);
 aold=a;
}
}