What would be the result from the following codes A 1 for i

What would be the result from the following codes A = 1; for i = 1:27 A = A + i; end A = ? Z =[20 40 -10 62]; A = 0; S = length(Z); for i = 1:S A = A * Z(i); A = A +1; end if (A ==0) Y = 0; else Y = 1; end Y = ? A = ?

Solution

1) 378

Sum of the natural numbers from 1 to 27

2) Y=1

A= -25357

Here you are iterating over the list Z. The length of the list Z is 4.

Now the loop execution in detail

A=0

Loop1:

A=0*Z(0) ==> A=0*20
A=0

A=0+1=1

Now A is 1

Loop2:

A=1*40 = 40

A=40+1=41

Now A=41

Loop3:

A=41* -10=-410

A=-410+1 = -409

Now A is -409

Loop4:

A=-409 * 62 = -25358

A=-25358+1= -25357