gistfile1.txt

$ cat thing.s 
        .section        __TEXT,__text,regular,pure_instructions
        .globl  _main
        .align  4, 0x90
_main:                                  ## @main
        .cfi_startproc
## BB#0:
        pushq   %rbp
Ltmp2:
        .cfi_def_cfa_offset 16
Ltmp3:
        .cfi_offset %rbp, -16
        movq    %rsp, %rbp
Ltmp4:
        .cfi_def_cfa_register %rbp
        leaq    L_.str(%rip), %rdi
        movl    $8, %esi
        movl    $8, %edx
        xorb    %al, %al
        callq   _printf
        xorl    %eax, %eax
        popq    %rbp
        ret
        .cfi_endproc

        .section        __TEXT,__cstring,cstring_literals
L_.str:                                 ## @.str
        .asciz   "%d, %d\n"


.subsections_via_symbols

gistfile2.txt

$ cat thing.c 
#include <stdio.h>
#include <math.h>

int
main (void) {
  int a, b, c = 4;

  a = pow(c, 2) - (3*c) + 4;
  b = (c * (c - 3)) + 4;

  printf("%d, %d\n", a, b);

  return 0;
}