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  1.  global _start
  2.  
  3. section .data
  4.         buffer  dw      0h
  5.  
  6. section .text
  7.  
  8. _start:
  9.         mov             ecx, buffer
  10.         mov             edx, 02h
  11.         call            read
  12.         mov             cx, word [buffer]
  13.         cmp             cx, 3234h
  14.         je              exit
  15.         cmp             ch, 0ah
  16.         je              one_dig
  17.         jmp             two_dig
  18.  
  19. one_dig:
  20.         mov             ecx, buffer
  21.         mov             edx, 02h
  22.         call            write
  23.         jmp             _start
  24.  
  25. two_dig:
  26.         mov             ecx, buffer
  27.         mov             edx, 02h
  28.         call            write
  29.         mov             edx, 01h
  30.         mov             ecx, buffer
  31.         call            read                    ; read the 0ah
  32.         mov             ecx, buffer
  33.         call            write                   ; write the 0ah
  34.         jmp             _start
  35.  
  36. exit:
  37.         mov             eax, 01h                ; exit()
  38.         xor             ebx, ebx                ; errno
  39.         int             80h
  40.  
  41.  
  42. read:
  43.         mov             eax, 03h                ; read()
  44.         mov             ebx, 00h                ; stdin
  45.         int             80h
  46.         ret
  47. write:
  48.         mov             eax, 04h                ; write()
  49.         mov             ebx, 01h                ; stdout
  50.         int             80h
  51.         ret
Runtime error #stdin #stdout 0.19s 144KB
comments (?)
stdin 
Standard input is empty
stdout 

	

		
	 
	
	
			

					
			
			
			
			
			
			
			
			

			
			
			
		

	
		
		

			


			                        
			
			

				

	
					
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language:

						
Assembler 32bit (nasm 2.14)

					

					

						
created:
								
						
14 years ago

					

					

						
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