While loop and if statement to choose between 2 criteria?

I am looking to write code which gives me x=0 if n=1 and x=7 if n=2 (n being user generated). However I want to continue prompting the user to input n =1 or n=2 if the value the user inputed was different than 1 or 2.

Answer 1

[Kirby Fears]

Start off with an n value that allows you to enter the while loop. The while loop should continue as long as n is not 1 or 2. After the while loop is over, you know n is either 1 or 2, so just test the n value and assign x accordingly.

n = 0; 
while sum(n==[1 2])<1,
    n = input('Please input value for n:\n');
end
if n==1
    x = 0;
else
    x = 7;
end

[Matilde Garcia]

Thanks a lot. It worked perfectly.