Answer:
if, then, else
Step-by-step explanation:
you specified that if you enter award for 1st prize then it'll display 1st prize but you didnt specify what will happen if user does not enter 1st prize or what happens if 1st prize is not allocated. To me it looks like you got the 'if' and 'then' part correct but you dont have a 'else' part to it therefore it'll create an error when its not declared.