section .data
title db "———————————————————————————————————————————"
    db 10, "ALP to print the given alphanumeric characters"
    db 10, "———————————————————————————————————————————",10
title_len equ $-title

input db 10, "Enter characters "
input_len equ $-input

output db 10, "Given characters are "
output_len equ $-output

end db "———————————————————————————————————————————",10
end_len equ $-end

section .bss
num resb 5

section .text
global _start
_start:
    mov eax,4
    mov ebx,1
    mov ecx,title
    mov edx,title_len
    int 80h

    mov eax,4
    mov ebx,1
    mov ecx,input
    mov edx,input_len
    int 80h

    mov eax,3
    mov ebx,2
    mov ecx,num
    mov edx,51
    int 80h

    mov eax,4
    mov ebx,1
    mov ecx,output
    mov edx,output_len
    int 80h
    
    mov eax,4
    mov ebx,1
    mov ecx,num
    mov edx,51
    int 80h

    mov eax,4
    mov ebx,1
    mov ecx,end
    mov edx,end_len
    int 80h

exit:
    mov ebx,0
    mov eax,1
    int 80h

kodingwindow@kw:~$ nasm -felf64 kw.asm
kodingwindow@kw:~$ ld kw.o && ./a.out
———————————————————————————————————————————
ALP to print the given alphanumeric characters
———————————————————————————————————————————

Enter characters HELLO @WORLD

Given characters are HELLO @WORLD
———————————————————————————————————————————
kodingwindow@kw:~$ 

section .data
title db "———————————————————————————————————————————"
    db 10, "ALP to print the given alphanumeric characters"
    db 10, "———————————————————————————————————————————",10
title_len equ $-title

input db 10, "Enter characters "
input_len equ $-input

output db 10, "Given characters are "
output_len equ $-output

end db "———————————————————————————————————————————",10
end_len equ $-end

section .bss
num resb 1
dispbuff resb 51

%macro display 4
    mov eax,%1
    mov ebx,%2
    mov ecx,%3
    mov edx,%4
    int 80h
%endm

section .text
global _start
_start:
    display 4,1,title,title_len
    display 4,1,input,input_len
    display 3,2,dispbuff,51

    display 4,1,output,output_len
    display 4,1,dispbuff,51
    display 4,1,end,end_len

exit:
    mov eax,1
    mov ebx,0
    int 80h

kodingwindow@kw:~$ nasm -felf64 kw.asm
kodingwindow@kw:~$ ld kw.o && ./a.out
———————————————————————————————————————————
ALP to print the given alphanumeric characters
———————————————————————————————————————————

Enter characters HELLO, @WORLD!  

Given characters are HELLO, @WORLD!
———————————————————————————————————————————
kodingwindow@kw:~$