Operator '==' is not supported for operands of type 'cell'.

eqprompt='Enter Equation (e.g. 2*x^2+4*x+9):';
        equation=inputdlg(eqprompt);
        eq=str2sym(equation);
        syms(symvar(eq));
        k=diff(str2sym(equation),var);
        disp(k)
        in='Do you want to put another equation? [Y or N]:';
        n = inputdlg(in,'s');
        while n == 'Y'
            eqprompt='Enter Equation (e.g. 2*x^2+4*x+9):';
            equation=inputdlg(eqprompt);
            eq=str2sym(equation);
            syms(symvar(eq));
            k=diff(str2sym(equation),var);
            disp(k)
            in='Y or N:';
            n = input(in,'s');
        end

Is there any operator i can use aside from "=="?

Answer 1

[Stephen23]

Use strcmpi instead of testing for character equality.

[Sudhakar Shinde]

Yup. string compare would be better option.

[goodwin membreve]

i dont know how to use that code

[Stephen23]

while strcmpi(n,'Y')

Do not use == or isequal, unless you really want to annoy the user who enters 'y' instead of 'Y'.

[goodwin membreve]

oh my god thank you.

Answer 2

[Ghina Alhunaidi]

code = inputdlg('Please enter the Alphabet Blocks Puzzle code:');

if code==25

fprintf ('Correct code! /n')

else

fprintf ('please try again /n')

code = inputdlg('Please enter the Alphabet Blocks Puzzle code:');

end

for some reason, i keep getting this error (Operator '==' is not supported for operands of type 'cell'. Error in EscapeRoom (line 2)

if code==25) whenever I input a value into the pop-up window and I've tried several functions and it still wont work, what do I have to change in my code to get it to work?