After the following MASM code is executed: mov eax,11 mov ebx,3 mov ecx,10 add e

Question

After the following MASM code is executed:
    mov    eax,11
    mov    ebx,3
    mov    ecx,10
    add    eax,ebx
    sub    eax,ecx

What is the value in the eax register (in decimal)?  
What is the value in the ebx register (in decimal)?  
What is the value in the ecx register (in decimal)?

Suppose that result is declared as DWORD, and the following MASM code is executed:
   mov eax,23
   mov ebx,14
   mov ecx,6
label5:
   add eax,ebx
   add ebx,2
   loop label5
   mov result,eax
What is the value stored in the memory location named result?

After the following MASM code is executed:
    mov    eax,212
    mov    ebx,17
    mov    edx,0
    div    ebx

What is the value in the eax register (in decimal)?  
What is the value in the ebx register (in decimal)?  
What is the value in the edx register (in decimal)?

Explanation / Answer

Mov eax,11---->a=11,
Mov abx,3------->b=3,
Mov ecx,10----->c=10,

Add eax,ebx--->eax=11+3+14,ebx=3,
Sub eax,ecx--->eax=14-10=4,ecx=10.

Decimal value of eax=4,
Decimal value of ebx=3,
Decimal value of ecx=10

Mov eax,23
Mov ebx,14
Mov ecx,6
label5:
add eax,ebx
add ebx,2
loop label5
mov result,eax

At the end of 1st loop
Decimal value of eax=37
Decimal value of ebx=16
Decimal value of ecx=5

At the end of 2nd loop
Decimal value of eax=53
Decimal value of ebx=18
Decimal value of ecx=4

At the end of 3rd loop
Decimal value of eax=71
Decimal value of ebx=20
Decimal value of ecx=3

At the end of 4th loop
Decimal value of eax=91
Decimal value of ebx=22
Decimal value of ecx=2

At the end of 5th loop
Decimal value of eax=113
Decimal value of ebx=24
Decimal value of ecx=1

At the end of final loop
Decimal value of eax=137
Decimal value of ebx=26
Decimal value of ecx=0

As Ecx value is 6 loop repeats 6 times

Decimal value in result = 137.

mov eax,212
mov ebx,17
mov edx,0
div ebx

Decimal value of eax=12
Decimal value of ebx=17
Decimal value of edx=8//edx stores remainder of the devision

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