section .data                   ; Data section to declare constants, messages
m1 db 10,"Enter the number:"    ; message declaration with define byte(db) 10 for new line
l1 equ $- m1                    ; length of the message (l1)
m2 db 10,"You have entered:"    ; message declaration with define byte(db) 10 for new line
l2 equ $- m1                    ; length of the message (l2)

section .bss
temp resb 2

section .text       ; main program section
global _start
_start:
;------------------------ print message code -------------------------------------------------------------------
mov rax, 1          ; system call for write
mov rdi, 1          ; file handle 1 is stdout
mov rsi, m1         ; address of string to output
mov rdx, l1         ; number of bytes
syscall             ; invoke operating system to do the write

;------------------------ accept the number -------------------------------------------------------------------
mov rax, 0          ; system call for read
mov rdi, 0          ; file handle 1 is stdin
mov rsi, temp       ; address of string to output
mov rdx, 2          ; number of bytes
syscall             ; invoke operating system to do the write

;------------------------ print 2nd message ------------------------------------------------------------
mov rax, 1          ; system call for write
mov rdi, 1          ; file handle 1 is stdout
mov rsi, m2         ; address of string to output (You have entered msg)
mov rdx, l2         ; number of bytes of m2
syscall             ; invoke operating system to do the write

;------------------------ print message code ------------------------------------------------------------
mov rax, 1          ; system call for write
mov rdi, 1          ; file handle 1 is stdout
mov rsi, temp       ; address of string to output shows value available in temp variable
mov rdx, 2          ; number of bytes (temp variable length)
syscall             ; invoke operating system to do the write

;----------------------------- exit code
mov rax, 60         ; system call for exit
mov rdi, 0          ; exit code 0
syscall             ; invoke operating system to exitsyscall