i have create a program that it will loop back if input y , but if user input other value, still will end the program . how can i restricted the value just y and n

i=0;N='y';

while N=='y'

area=input('Please select area (kitchen, bathroom or storeroom):','s');

k='kitchen';

b='bathroom';

s='storeroom';

switch area

case 'kitchen'

N=input('\nDo you want to reselect area? yes/no \n Enter (y/n)= ','s');

case'bathroom'

case'storeroom'

otherwise

disp('Error is detected. Please select the area again!!!')

end

end

disp('finish')

Answer 1

[DGM]

This might do what you need.

selectarea = true;
while selectarea
    area = input('Please select area (kitchen, bathroom or storeroom): ','s');
    
    switch lower(area)
        case 'kitchen'
            disp('you selected kitchen')
            
        case'bathroom'
            disp('you selected bathroom')
            
        case'storeroom'
            disp('you selected storeroom')
            
        otherwise
            disp('Error is detected. Please select the area again!!!')
            continue;
    end
    
    f = input('Do you want to reselect the area? (Y/N): ','s');
    selectarea = ~isempty(f) && lower(f(1))=='y';
end