for and while loops calculations with user input

hello, I should calculate the sum of positive and negative numbers and number of positives of a user given input.I considered user input 3 numbers that can be positive or negative,

• sum_pos=0;
• num_pos=0;
• sum_neg=0;
• *for i=1:3
• T=input('please enter a negative or positive number: ');

if(T>=0)

• sum_pos=sum_pos+(T>=0);
• disp(sum_pos)
• num_pos=length(T>=0);
• else
• sum_neg=sum_neg+(T<0);
• disp(sum_neg);
• end
• end

but only the input part is working.. What can be the problem and how I can change it ?

[Jan]

Please do not post a qeustion multiple time. To avoid confusing the readers, delte your other question. Thanks.

Whenever you state in a forum, that something is "not working", explain exacty, what you observe.

Answer 1

[Jan]

You are almost there. Just some small modifications:

sum_pos = 0;
num_pos = 0;
sum_neg = 0;

for i=1:3
  T = input('please enter a negative or positive number: ');
  if T >= 0
    sum_pos = sum_pos + T;  % Not +(T>=0);
    num_pos = num_pos + 1;
  else
    sum_neg = sum_neg + T;
  end
end

disp([sum_pos, num_pos, sum_neg]);

[dilara ozbay]

this really helped, thanks:)