Asking a user to solve a riddle

riddle1prompt='The person who built it sold it. The person who bought it never used it. The person who used it never saw it. What is it? ';

riddle1=input(riddle1prompt,'s');

riddle1='Coffin';

fprintf('\n')

if (riddle1=='Coffin')

riddle2prompt='Nice job. Your next riddle is; I dont have eyes, but once I did see. Once I had thoughts, but now Im white and empty. What am I? ';

riddle2=input(riddle2prompt,'s');

riddle2='Skull';

elseif(riddle1~='Coffin')

fprintf('Oh no, what did I say about not messing up. ITS GAME OVER FOR YOU,%s.',name)

firstroom=false;

end

if (riddle2=='Skull')

riddle3prompt='He comes to bedsides, icy bridges, battlefronts, and crumbling ridges. When he comes, he comes alone, taps a shoulder, then is gone. What is he? ';

riddle3=input(riddle3prompt,'s');

riddle3='Death';

elseif(riddle2~='Skull')

fprintf('Oh no, what did I say about not messing up. ITS GAME OVER FOR YOU,%s.',name)

firstroom=false;

I am having issues getting the elseifs to work in the code, what am I doing wrong with the inputs?