#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *, int *, int *, int *, int *, int *,
                         int *, int *, int *, int *, int *);
int main(void) {
  int d, i1, i2, i3, i4, i5, j1, j2, j3, j4, j5, first_num, second_num, total;
  printf("enter the first 11 digit of a UPC:\n");
  scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d", &d, &i1, &i2, &i3, &i4, &i5, &j1,
        &j2, &j3, &j4, &j5);
  first_num = d + i2 + i4 + j1 + j3 + j5;
  second_num = i1 + i3 + i5 + j2 + j4;
  total = 3 * first_num + second_num;
  printf("check digit: %d\n", 9 - ((total - 1) % 10));
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
push   %r15
push   %r14
push   %rbx
sub    $0x78,%rsp
movl   $0x0,-0x1c(%rbp)
lea    0xec5(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xedb(%rip),%rdi
lea    -0x20(%rbp),%rsi
lea    -0x24(%rbp),%rdx
lea    -0x28(%rbp),%rcx
lea    -0x2c(%rbp),%r8
lea    -0x30(%rbp),%r9
lea    -0x34(%rbp),%r15
lea    -0x38(%rbp),%r14
lea    -0x3c(%rbp),%rbx
lea    -0x40(%rbp),%r11
lea    -0x44(%rbp),%r10
lea    -0x48(%rbp),%rax
mov    %r15,(%rsp)
mov    %r14,0x8(%rsp)
mov    %rbx,0x10(%rsp)
mov    %r11,0x18(%rsp)
mov    %r10,0x20(%rsp)
mov    %rax,0x28(%rsp)
call   1040 <scanf@plt>
mov    -0x20(%rbp),%eax
add    -0x28(%rbp),%eax
add    -0x30(%rbp),%eax
add    -0x38(%rbp),%eax
add    -0x40(%rbp),%eax
add    -0x48(%rbp),%eax
mov    %eax,-0x4c(%rbp)
mov    -0x24(%rbp),%eax
add    -0x2c(%rbp),%eax
add    -0x34(%rbp),%eax
add    -0x3c(%rbp),%eax
add    -0x44(%rbp),%eax
mov    %eax,-0x50(%rbp)
imul   $0x3,-0x4c(%rbp),%eax
add    -0x50(%rbp),%eax
mov    %eax,-0x54(%rbp)
mov    -0x54(%rbp),%eax
sub    $0x1,%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    $0x9,%esi
sub    %edx,%esi
lea    0xe62(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x78,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x30,%rsp
lea    0xef3(%rip),%rdi
call   1030 <puts@plt>
lea    0x4(%rsp),%rax
lea    0x8(%rsp),%r10
lea    0xc(%rsp),%r11
lea    0x10(%rsp),%rbx
lea    0x14(%rsp),%r14
lea    0x18(%rsp),%r15
lea    0xe96(%rip),%rdi
lea    0x2c(%rsp),%rsi
lea    0x28(%rsp),%rdx
lea    0x24(%rsp),%rcx
lea    0x20(%rsp),%r8
lea    0x1c(%rsp),%r9
push   %rax
push   %r10
push   %r11
push   %rbx
push   %r14
push   %r15
call   1050 <scanf@plt>
add    $0x30,%rsp
mov    0x24(%rsp),%eax
add    0x2c(%rsp),%eax
add    0x1c(%rsp),%eax
add    0x14(%rsp),%eax
add    0xc(%rsp),%eax
add    0x4(%rsp),%eax
mov    0x28(%rsp),%ecx
mov    0x8(%rsp),%edx
add    0x20(%rsp),%ecx
lea    (%rax,%rax,2),%eax
add    %eax,%ecx
add    0x18(%rsp),%ecx
add    0x10(%rsp),%ecx
lea    (%rdx,%rcx,1),%eax
add    $0xffffffff,%eax
cltq
imul   $0x66666667,%rax,%rcx
mov    %rcx,%rdx
shr    $0x3f,%rdx
sar    $0x22,%rcx
add    %edx,%ecx
add    %ecx,%ecx
lea    (%rcx,%rcx,4),%esi
sub    %eax,%esi
add    $0x9,%esi
lea    0xe2e(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [36 x i8] c"enter the first 11 digit of a UPC:\0A\00"
@.str.1 = [34 x i8] c"%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d\00"
@.str.2 = [17 x i8] c"check digit: %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32
%10 = alloca i32
%11 = alloca i32
%12 = alloca i32
%13 = alloca i32
%14 = alloca i32
%15 = alloca i32
store i32 0, i32* %1
%16 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str, i64 0, i64 0))
%17 = call i32 @scanf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, i32* %8, i32* %9, i32* %10, i32* %11, i32* %12)
%18 = load i32, i32* %2
%19 = load i32, i32* %4
%20 = add nsw i32 %18, %19
%21 = load i32, i32* %6
%22 = add nsw i32 %20, %21
%23 = load i32, i32* %8
%24 = add nsw i32 %22, %23
%25 = load i32, i32* %10
%26 = add nsw i32 %24, %25
%27 = load i32, i32* %12
%28 = add nsw i32 %26, %27
store i32 %28, i32* %13
%29 = load i32, i32* %3
%30 = load i32, i32* %5
%31 = add nsw i32 %29, %30
%32 = load i32, i32* %7
%33 = add nsw i32 %31, %32
%34 = load i32, i32* %9
%35 = add nsw i32 %33, %34
%36 = load i32, i32* %11
%37 = add nsw i32 %35, %36
store i32 %37, i32* %14
%38 = load i32, i32* %13
%39 = mul nsw i32 3, %38
%40 = load i32, i32* %14
%41 = add nsw i32 %39, %40
store i32 %41, i32* %15
%42 = load i32, i32* %15
%43 = sub nsw i32 %42, 1
%44 = srem i32 %43, 10
%45 = sub nsw i32 9, %44
%46 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0), i32 %45)
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [34 x i8] c"%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d\00"
@.str.2 = [17 x i8] c"check digit: %d\0A\00"
@str = [35 x i8] c"enter the first 11 digit of a UPC:\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
%7 = alloca i32
%8 = alloca i32
%9 = alloca i32
%10 = alloca i32
%11 = alloca i32
%12 = bitcast i32* %1 to i8*
%13 = bitcast i32* %2 to i8*
%14 = bitcast i32* %3 to i8*
%15 = bitcast i32* %4 to i8*
%16 = bitcast i32* %5 to i8*
%17 = bitcast i32* %6 to i8*
%18 = bitcast i32* %7 to i8*
%19 = bitcast i32* %8 to i8*
%20 = bitcast i32* %9 to i8*
%21 = bitcast i32* %10 to i8*
%22 = bitcast i32* %11 to i8*
%23 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @str, i64 0, i64 0))
%24 = call i32 @scanf(i8* getelementptr inbounds ([34 x i8], [34 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2, i32* %3, i32* %4, i32* %5, i32* %6, i32* %7, i32* %8, i32* %9, i32* %10, i32* %11)
%25 = load i32, i32* %1
%26 = load i32, i32* %3
%27 = add nsw i32 %26, %25
%28 = load i32, i32* %5
%29 = add nsw i32 %27, %28
%30 = load i32, i32* %7
%31 = add nsw i32 %29, %30
%32 = load i32, i32* %9
%33 = add nsw i32 %31, %32
%34 = load i32, i32* %11
%35 = add nsw i32 %33, %34
%36 = load i32, i32* %2
%37 = load i32, i32* %4
%38 = load i32, i32* %6
%39 = load i32, i32* %8
%40 = load i32, i32* %10
%41 = mul nsw i32 %35, 3
%42 = add i32 %36, -1
%43 = add i32 %42, %37
%44 = add i32 %43, %41
%45 = add i32 %44, %38
%46 = add i32 %45, %39
%47 = add i32 %46, %40
%48 = srem i32 %47, 10
%49 = sub nsw i32 9, %48
%50 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0), i32 %49)
ret i32 0
}