nsm

%include "io64.inc"

extern scanf
extern printf

section .rodata
    fstr db '%ll', 0

section .bss
    n resq 1

section .text
global CMAIN
CMAIN:
    mov rbp, rsp; for correct debugging
    push rbp
    mov rbp, rsp; for correct debugging
    and rsp, -16
    xor eax, eax
    lea rdi, [fstr]
    lea rsi, [n]
    call scanf
    xor eax, eax
    ret