#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 *);
void main() {
  int dec, di = 1, ans = 0;
  printf("%s", "Enter the number: ");
  scanf("%d", &dec);
  while (dec != 0) {
    ans = ans + (dec % 2) * di;
    dec /= 2;
    di *= 10;
  }
  printf("%d\n", ans);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x1,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xec3(%rip),%rdi
lea    0xebf(%rip),%rsi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec4(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x4(%rbp)
je     119c <main+0x7c>
mov    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x4(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
mov    -0x10(%rbp),%eax
imul   -0x8(%rbp),%edx
add    %edx,%eax
mov    %eax,-0xc(%rbp)
mov    -0x4(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
mov    %eax,-0x4(%rbp)
imul   $0xa,-0x8(%rbp),%eax
mov    %eax,-0x8(%rbp)
jmp    115b <main+0x3b>
mov    -0xc(%rbp),%esi
lea    0xe73(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xed4(%rip),%rdi
lea    0xed0(%rip),%rsi
xor    %ebx,%ebx
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xed3(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1040 <scanf@plt>
mov    0xc(%rsp),%eax
test   %eax,%eax
je     1188 <main+0x68>
mov    $0x1,%ecx
xor    %ebx,%ebx
nopl   0x0(%rax)
mov    %eax,%edx
shr    $0x1f,%eax
add    %edx,%eax
mov    %eax,%esi
and    $0xfffffffe,%esi
mov    %edx,%edi
sub    %esi,%edi
imul   %ecx,%edi
add    %edi,%ebx
sar    %eax
add    %ecx,%ecx
lea    (%rcx,%rcx,4),%ecx
add    $0x1,%edx
cmp    $0x2,%edx
ja     1160 <main+0x40>
mov    %eax,0xc(%rsp)
lea    0xe8a(%rip),%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%s\00"
@.str.1 = [19 x i8] c"Enter the number: \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [4 x i8] c"%d\0A\00"
define void @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 1, i32* %2
store i32 0, i32* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
br label %6
6: ; preds = %9, %0
%7 = load i32, i32* %1
%8 = icmp ne i32 %7, 0
br i1 %8, label %9, label %20
9: ; preds = %6
%10 = load i32, i32* %3
%11 = load i32, i32* %1
%12 = srem i32 %11, 2
%13 = load i32, i32* %2
%14 = mul nsw i32 %12, %13
%15 = add nsw i32 %10, %14
store i32 %15, i32* %3
%16 = load i32, i32* %1
%17 = sdiv i32 %16, 2
store i32 %17, i32* %1
%18 = load i32, i32* %2
%19 = mul nsw i32 %18, 10
store i32 %19, i32* %2
br label %6
20: ; preds = %6
%21 = load i32, i32* %3
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %21)
ret void
}

LLVM IR (-O2):
@.str = [3 x i8] c"%s\00"
@.str.1 = [19 x i8] c"Enter the number: \00"
@.str.2 = [3 x i8] c"%d\00"
@.str.3 = [4 x i8] c"%d\0A\00"
define void @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = icmp eq i32 %5, 0
br i1 %6, label %19, label %7
7: ; preds = %0, %7
%8 = phi i32 [ %13, %7 ], [ 0, %0 ]
%9 = phi i32 [ %15, %7 ], [ 1, %0 ]
%10 = phi i32 [ %14, %7 ], [ %5, %0 ]
%11 = srem i32 %10, 2
%12 = mul nsw i32 %11, %9
%13 = add nsw i32 %8, %12
%14 = sdiv i32 %10, 2
%15 = mul nsw i32 %9, 10
%16 = add i32 %10, 1
%17 = icmp ult i32 %16, 3
br i1 %17, label %18, label %7
18: ; preds = %7
store i32 %14, i32* %1
br label %19
19: ; preds = %18, %0
%20 = phi i32 [ %13, %18 ], [ 0, %0 ]
%21 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i32 %20)
ret void
}