How to add final value of a loop part to the next one. i need to add the months answers of ii=1 to ii=12

Question

Seb Stephen 2018-6-19

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评论： Seb Stephen 2018-6-19

clc;
clear;
month =0;
for ii = 1:12
   x1 = input('week1:');
   x2 = input('week2:');
   x3 = input('week3:');
   x4 = input('week4:');
    month = x1+x2+x3+x4
end

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Dennis 2018-6-19

在 MATLAB Online 中打开

Use ii as index:

month(ii)=x1+x2+x3+x4;

Maybe consider indexing x aswell:

for ii=1:2
for k=1:4
x(k)=input(strcat('week',num2str(k)));
end
month(ii)=sum(x);
end

If you want to keep x values you can use x(ii,k) and sum(x(ii,:))

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Answer 1

Guillaume 2018-6-19

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在 MATLAB Online 中打开

What is the purpose of Xs ?

Do not number variables. If you're numbering variables that is a good indication that you should be using an array instead:

for ii = 1:12
  x(1) = ...
  x(2) = ...
  ...
  month = sum(x);
end

Even better since you're now using an array, you can use another loop:

for ii = 1:12
  for week = 1:4
    x(week) = input(sprintf('week%d:', week));
  end
  month = sum(x);
end

this is much better code. If you need to add another week, you only need to change the endpoint of the loop.

As for your question, if I understood correctly:

month = 0; 
for ii = ...
   ...
   month = month + sum(x);
end

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Seb Stephen 2018-6-19

I wrongly corrected it, don't bother with XS Thanks for correction, i really appreciate it. thanks

Seb Stephen 2018-6-19

for the last part , how can i cummulate the months answers? '' month = month + sum(x)''

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Answer 2

Sayyed Ahmad 2018-6-19

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编辑：Sayyed Ahmad 2018-6-19

在 MATLAB Online 中打开

clc;
clear;
XS =0;
month=0;
for ii = 1:12
   x1 = input('week1:');
   x2 = input('week2:');
   x3 = input('week3:');
   x4 = input('week4:');
    month = month+x1+x2+x3+x4
end