Basic For Loop problem

It is not very difficult code but I don't know why I am getting error. The value of the k should be printed like 1, 1, 1, 2, 2, 2, 3, 3, 3, ....... 1000, 1000, 1000 but it does not start from 1, 1, 1. Please help with this very simple question. If I remove a=2+4 and b=a+7 then it is okay.

for k=1:1000
    a=2+4;
    b=a+7
    for i=1:3
        k
    end
end

Answer 1

[Walter Roberson]

b=a+7

change to

b=a+7;

[Muhammad Ahsan]

Thank you. I have done this (b=a+7) to (b=a+7;). Actually the problem is that, when I run this code, I get k = 667

k = 668

k = 668

k = 668

k = 669

k = 669

k = ......

The thing is, why it is not starting from k=1, k=1, k=1, .....

[Walter Roberson]

The rest scrolled off your screen.