How can strings be used in an if loop?

I am trying to use a string to create an if loop for a programme that analyses an image. I'm getting this string from a prompt then just placing in a test to see if my code has worked. Can anyone give me any pointers as to how to get this to work? My code is attached

prompt1 = 'Would you like to remove edge effects (Y/N)?'
ans1 = input(prompt1)

if ans1 = 'Y'
    x = 5*5
elseif ans1 = 'N'
    x = 5/5
end

Answer 1

[the cyclist]

prompt1 = 'Would you like to remove edge effects (Y/N)?';
ans1 = input(prompt1,'s');
if strcmpi(ans1,'y')
    x = 5*5
elseif strcmpi(ans1,'n')
    x = 5/5
end

[Nathan Costin]

thank you!

Answer 2

[Image Analyst]

You'd need to use ans1 == 'Y' (two equal signs) or else use the string compare function strcmpi(ans1, 'Y').

Answer 3

[Tom Hawkins]

Alternatively…

prompt1 = 'Would you like to remove edge effects (Y/N)?'
ans1 = input(prompt1)

switch ans1
    case {'Y', 'y'}
        x = 5*5
    case {'N', 'n'}
        x = 5/5
    otherwise
    % the input was neither of the above
end