How to enter negative values ​​and values ​​greater than 9 in input with string.

clear
clc

n=10;
ii=1;
V=0;
display('number between 10 and 20!')

while ii<10
    teste = input('Enter a value: ','s')
    if strcmp(teste,'End')
        display('You cannot type end before you have 10 values entered')
        continue;
    end
    X(ii) = teste
    V(ii) = str2num(X(ii))
    ii = ii+1;
end

while (ii>10) | (ii<20)
    teste = input('Enter a value: ','s')
    if strcmp(teste,'End')
        display('End Program')
        break;
    end
    X(ii) = teste
    V(ii) = str2num(X(ii))
    ii = ii+1;
end

Answer 1

[Khalid Mahmood]

%for 10 values, while ii<11 is needed whe we start with ii=1, and
%string(teste) to convert character array into string
clear,clc
n=10;
ii=1;
V=0;
display('number between 10 and 20!')
while ii<11
    teste = input('Enter a value: ','s')
    if strcmpi(teste,'End')
        display('You cannot type end before you have 10 values entered')
        continue;
    end
    X(ii) = string(teste)
    V(ii) = str2num(X(ii))
    ii = ii+1;
end
fprintf('\n loop 2:');
while (ii>10) | (ii<20)
    teste = input('Enter a value: ','s')
    if strcmpi(teste,'End')
        display('End Program')
        break;
    end
    X(ii) = teste
    V(ii) = str2num(X(ii))
    ii = ii+1;
end

[Khalid Mahmood]

note: its better to use strcmpi so that End , end and END all must be valid to end the loop

[Adam Danz]

It's also better to use str2double than str2um. See discussion.

[Luccas S.]

Okay, now it worked. I just had to reverse the order of the vectors X (ii) and V (ii).

X (ii) = str2double (test)

V (ii) = X (ii)

I didn't remember the strcmpi function, thanks.