Prompt a User to type his name and Gree Him on the Console, Assembly Language Code

greet.asm

;Author : Sanjib Narzary
;Institute: NIT Calicut
;Email: o-._.-o@live.com
;greet.asm
section .data
	; Declare/store the information "Hello World!" 
	prompt db 'What is your name? '
	; do not change the order of the following three lines!
	helloMsg dq 'Hello '
	name db ' '	;  space characters
	endOfLine db '!'
	; do not change the order of the previous three lines!
		
section .text
	
	global _start
	
_start:
	
		; Output that information 'What is your name? '
		mov eax, 4	; write…
		mov ebx, 1	; to the standard output (screen/console)…
		mov ecx, prompt	; the information at memory address prompt
		mov edx, 19	; 19 bytes (characters) of that information
		int 0x80	; invoke an interrupt
	
		; Accept input and store the user's name
		mov eax, 3	; read…
		mov ebx, 1	; from the standard input (keyboard/console)…
		mov ecx, name	; storing at memory location name…
		mov edx, 23	; 23 bytes (characters) is ok for my name
		int 0x80
	
		; Output that information "Hello…"
		mov eax, 4	; write…
		mov ebx, 1	; to the standard output (screen/console)…
		mov ecx, helloMsg	; the information at helloMsg…
		mov edx, 23	; 23 bytes (characters) is ok for my name
		int 0x80
	
		; Exit
		mov eax, 1	; sys_exit
		mov ebx, 0	; exit status. 0 means "normal", while 1 means "error"
				; see http://en.wikipedia.org/wiki/Exit_status
		int 0x80

to run it
$nasm -f elf greet.asm
$ld -s -o greet greet.o
$./greet
What is your name? sanjib narzary
Hello sanjib narzary
$