Question

Write an HLA Assembly language program that prompts for a specific int8 value named n and then displays a repeated digit pattern starting with that number. The repeated digit pattern should show all the numbers from 1 up to n

Answer 1

Answer:

Output:

123456

123456

123456

123456

123456

123456

Explanation:

C Code:

#include <stdio.h>

int main() {

int n,i,j;

printf("Gimme a decimal value to use as n:");

scanf("%d",&n);

for(i=0;i<n;i++){

for(j=1;j<=n;j++){

printf("%d",j);

}

printf("\n");

}

return 0;

}

Equivalent assembly program:

.LC0:

.string "Gimme a decimal value to use as n:"

.LC1:

.string "%d"

main:

push rbp

mov rbp, rsp

sub rsp, 16

mov edi, OFFSET FLAT:.LC0

mov eax, 0

call printf

lea rax, [rbp-12]

mov rsi, rax

mov edi, OFFSET FLAT:.LC1

mov eax, 0

call scanf

mov DWORD PTR [rbp-4], 0

.L5:

mov eax, DWORD PTR [rbp-12]

cmp DWORD PTR [rbp-4], eax

jge .L2

mov DWORD PTR [rbp-8], 1

.L4:

mov eax, DWORD PTR [rbp-12]

cmp DWORD PTR [rbp-8], eax

jg .L3

mov eax, DWORD PTR [rbp-8]

mov esi, eax

mov edi, OFFSET FLAT:.LC1

mov eax, 0

call printf

add DWORD PTR [rbp-8], 1

jmp .L4

.L3:

mov edi, 10

call putchar

add DWORD PTR [rbp-4], 1

jmp .L5

.L2:

mov eax, 0

leave

ret

Input:

6

The program was first written with a c code, anf and subsequently translated to an assembly language.