#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 input;
  int output;
  printf("Please enter an integer: ");
  scanf("%i", &input);
  while (input > 0) {
    output = input % 10;
    printf("%i\n", output);
    input = input / 10;
  }
  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    0xed6(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jle    1189 <main+0x69>
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %edx,-0xc(%rbp)
mov    -0xc(%rbp),%esi
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %eax,-0x8(%rbp)
jmp    114d <main+0x2d>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xed5(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xee1(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
test   %esi,%esi
jle    119e <main+0x7e>
mov    $0xcccccccd,%r14d
lea    0xec5(%rip),%rbx
nopl   0x0(%rax,%rax,1)
mov    %esi,%eax
imul   %r14,%rax
shr    $0x23,%rax
add    %eax,%eax
lea    (%rax,%rax,4),%eax
sub    %eax,%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1030 <printf@plt>
movslq 0x4(%rsp),%rax
imul   $0x66666667,%rax,%rsi
mov    %rsi,%rcx
shr    $0x3f,%rcx
sar    $0x22,%rsi
add    %ecx,%esi
mov    %esi,0x4(%rsp)
cmp    $0x9,%rax
jg     1160 <main+0x40>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [26 x i8] c"Please enter an integer: \00"
@.str.1 = [3 x i8] c"%i\00"
@.str.2 = [4 x i8] c"%i\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 ([26 x i8], [26 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 = %9, %0
%7 = load i32, i32* %2
%8 = icmp sgt i32 %7, 0
br i1 %8, label %9, label %16
9: ; preds = %6
%10 = load i32, i32* %2
%11 = srem i32 %10, 10
store i32 %11, i32* %3
%12 = load i32, i32* %3
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %12)
%14 = load i32, i32* %2
%15 = sdiv i32 %14, 10
store i32 %15, i32* %2
br label %6
16: ; preds = %6
ret i32 0
}

LLVM IR (-O2):
@.str = [26 x i8] c"Please enter an integer: \00"
@.str.1 = [3 x i8] c"%i\00"
@.str.2 = [4 x i8] c"%i\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([26 x i8], [26 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 sgt i32 %5, 0
br i1 %6, label %7, label %14
7: ; preds = %0, %7
%8 = phi i32 [ %12, %7 ], [ %5, %0 ]
%9 = urem i32 %8, 10
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %9)
%11 = load i32, i32* %1
%12 = sdiv i32 %11, 10
store i32 %12, i32* %1
%13 = icmp sgt i32 %11, 9
br i1 %13, label %7, label %14
14: ; preds = %7, %0
ret i32 0
}