#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 main() {
  int digit, n;
  printf("\nEnter an integer > ");
  scanf("%d", &digit);
  while (digit != 0) {
    n = digit % 10;
    if (digit < -10)
      n = n * -1;
    digit = (digit - n) / 10;
    printf("\n%d", n);
  }
  printf("\nThat's all, have a nice day!\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xed2(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
je     119d <main+0x7d>
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %edx,-0xc(%rbp)
cmpl   $0xfffffff6,-0x8(%rbp)
jge    1176 <main+0x56>
imul   $0xffffffff,-0xc(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%eax
sub    -0xc(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %eax,-0x8(%rbp)
mov    -0xc(%rbp),%esi
lea    0xe84(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    114d <main+0x2d>
lea    0xe75(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xec4(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xecc(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1050 <scanf@plt>
mov    0xc(%rsp),%eax
test   %eax,%eax
je     11c7 <main+0x97>
lea    0xeb2(%rip),%rbx
cs nopw 0x0(%rax,%rax,1)
nopl   (%rax)
cltq
imul   $0x66666667,%rax,%rcx
mov    %rcx,%rdx
shr    $0x3f,%rdx
sar    $0x22,%rcx
add    %edx,%ecx
add    %ecx,%ecx
lea    (%rcx,%rcx,4),%ecx
mov    %eax,%edx
sub    %ecx,%edx
mov    %edx,%esi
neg    %esi
cmp    $0xfffffff6,%eax
cmovge %edx,%esi
sub    %esi,%eax
cltq
imul   $0x66666667,%rax,%rax
mov    %rax,%rcx
shr    $0x3f,%rcx
sar    $0x22,%rax
add    %ecx,%eax
mov    %eax,0xc(%rsp)
mov    %rbx,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    0xc(%rsp),%eax
test   %eax,%eax
jne    1170 <main+0x40>
lea    0xe4b(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [21 x i8] c"\0AEnter an integer > \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"\0A%d\00"
@.str.3 = [31 x i8] c"\0AThat's all, have a nice day!\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
br label %6
6: ; preds = %17, %0
%7 = load i32, i32* %2
%8 = icmp ne i32 %7, 0
br i1 %8, label %9, label %24
9: ; preds = %6
%10 = load i32, i32* %2
%11 = srem i32 %10, 10
store i32 %11, i32* %3
%12 = load i32, i32* %2
%13 = icmp slt i32 %12, -10
br i1 %13, label %14, label %17
14: ; preds = %9
%15 = load i32, i32* %3
%16 = mul nsw i32 %15, -1
store i32 %16, i32* %3
br label %17
17: ; preds = %14, %9
%18 = load i32, i32* %2
%19 = load i32, i32* %3
%20 = sub nsw i32 %18, %19
%21 = sdiv i32 %20, 10
store i32 %21, i32* %2
%22 = load i32, i32* %3
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %22)
br label %6
24: ; preds = %6
%25 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([31 x i8], [31 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [21 x i8] c"\0AEnter an integer > \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"\0A%d\00"
@str = [30 x i8] c"\0AThat's all, have a nice day!\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([21 x i8], [21 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = icmp eq i32 %5, 0
br i1 %6, label %18, label %7
7: ; preds = %0, %7
%8 = phi i32 [ %16, %7 ], [ %5, %0 ]
%9 = srem i32 %8, 10
%10 = icmp slt i32 %8, -10
%11 = sub nsw i32 0, %9
%12 = select i1 %10, i32 %11, i32 %9
%13 = sub nsw i32 %8, %12
%14 = sdiv i32 %13, 10
store i32 %14, i32* %1
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %12)
%16 = load i32, i32* %1
%17 = icmp eq i32 %16, 0
br i1 %17, label %18, label %7
18: ; preds = %7, %0
%19 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str, i64 0, i64 0))
ret i32 0
}