BookmarkBookmarked Using Assembly Language write the following program. Problem
ID: 3785177 • Letter: B
Question
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Using Assembly Language write the following program.
Problem Definition:
Write a program to calculate Fibonacci numbers.
• Display the program title and programmer’s name. Then get the user’s name, and greet the user.
• Prompt the user to enter the number of Fibonacci terms to be displayed. Advise the user to enter an integer in the range [1 .. 46].
• Get and validate the user input (n).
• Calculate and display all of the Fibonacci numbers up to and including the nth term. The results should be displayed 5 terms per line with at least 5 spaces between terms.
• Display a parting message that includes the user’s name, and terminate the program.
Requirements:
1) The programmer’s name and the user’s name must appear in the output.
2) The loop that implements data validation must be implemented as a post-test loop.
3) The loop that calculates the Fibonacci terms must be implemented using the MASM loop instruction.
4) The main procedure must be modularized into at least the following sections (procedures are not required this time):
a. introduction
b. userInstructions
c. getUserData
d. displayFibs
e. farewell
5) Recursive solutions are not acceptable for this assignment. This one is about iteration.
6) The upper limit should be defined and used as a constant.
7) The usual requirements regarding documentation, readability, user-friendliness, etc., apply.
Notes:
1) It is not necessary to store the Fibonacci numbers in an array. The terms may be displayed as they are generated.
2) The second-order Fibonacci sequence is defined as:
a. The first two terms are both 1.
b. All other terms are calculated as the sum of the two previous terms.
c. The reason for restricting n to [1 .. 46] is that the 47th Fibonacci number is too big for DWORD data type
Explanation / Answer
proc getFibonocci
mov a,f
mov b,f
;mov c,counter
;cmp c,number
;je exitFibonocci
mov d,a
add d,48
mov ah,02h
int 21h
mov c,counter
add c,1
mov counter,c
mov d,b
add d,48
mov ah,02h
int 21h
mov c,counter
add c,1
mov counter,c
calcFibonocci:
mov a,f1
add a,f2
mov f1,a
mov d,f1
add d,48
mov ah,02h
int 21h
mov c,counter
add c,1
mov counter,c
mov c,counter
cmp c,number
je exitFibonocci
mov b,f2
add b,f1
mov f2,b
mov d,f2
add d,48
mov ah,02h
int 21h
mov c,count
add c,1
mov counter,c
mov c,counter
cmp c,num
je exitFibonocci
jmp calcFibonocci
exitFibonocci:
ret
endp
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