Array with Nested Loops

[Rahul_SAS]

Hello Experts,

Could you please explain the below code as I am not able to understand the kind of output its giving.

data temp;
format length width height 6.2;
array dimms lenght width height;
do j=1 to 10;
length = 100;
width = 50;
height = 30;
do i = 1 to 3;
dimms [i] = dimms[i] + normal (0)*2;
end;
output;
end;

In the below output, why i am getting 2 "lenght" variable? What is the use of "normal (0)*2"?

Why only first Lenght variable getting all 100s for all 10 observations however the other variables "width" and "height" are getting calculated values?

Thanks

[PaigeMiller]

The variable named LENGHT is probably a mis-spelling of LENGTH, and this improperly spelled variable appears in your code. This mis-spelled variable has never been assigned a value so you see it is always missing.

NORMAL(0)*2 is a random number generator, multiplied by 2.

LENGTH always has a value of 100 because nowhere in the code does the value get changed, probably because of the mis-spelling that I mentioned.