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  1. %macro WRITE 2
  2.     mov rax, 01
  3.     mov rdi, 01
  4.     mov rsi, %1
  5.     mov rdx, %2
  6.     syscall
  7. %endmacro
  8.  
  9. %macro READ 2
  10.     mov rax, 00
  11.     mov rdi, 00
  12.     mov rsi, %1
  13.     mov rdx, %2
  14.     syscall
  15. %endmacro
  16.  
  17. %macro EXIT 0
  18.     mov rax, 60
  19.     mov rdi, 00
  20.     syscall
  21. %endmacro
  22.  
  23. section .data
  24.  
  25. msg1 db "Enter 2 numbers", 10
  26. len1 equ $-msg1
  27.  
  28. msg2 db "Addition is: "
  29. len2 equ $-msg2
  30.  
  31. section .bss
  32.  
  33. a resb 1
  34. b resb 1
  35. c resb 1
  36.  
  37. section .text
  38. global _start
  39.  
  40. _start:
  41.  
  42.     WRITE msg1, len1
  43.  
  44.     READ a, 1
  45.     sub byte [a], 30H
  46.  
  47.     READ b, 1
  48.     sub byte [b], 30H
  49.  
  50.     mov bl, byte [a]
  51.     add bl, byte [b]
  52.  
  53.     add bl, 30H
  54.     mov byte [c], bl
  55.  
  56.     WRITE msg2, len2
  57.     WRITE c, 1
  58.  
  59.     EXIT
Success #stdin #stdout 0s 5312KB
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52
stdout
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Enter 2 numbers
Addition is: 7
https://ideone.com/UFnOoj
language:
Assembler 64bit (nasm 2.14)
created:
6 hours ago
visibility:
public

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