#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(void) {
  int decimal = 0, binary = 0, quo, x;
  printf("Enter a decimal number : ");
  scanf("%d", &decimal);
  quo = decimal;
  for (x = 1; quo != 0; x++) {
    printf("%d", quo % 2);
    quo = quo / 2;
  }
  printf("\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xebc(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec8(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0x10(%rbp)
movl   $0x1,-0x14(%rbp)
cmpl   $0x0,-0x10(%rbp)
je     11a9 <main+0x89>
mov    -0x10(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
mov    %edx,%esi
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x10(%rbp),%eax
mov    $0x2,%ecx
cltd
idiv   %ecx
mov    %eax,-0x10(%rbp)
mov    -0x14(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x14(%rbp)
jmp    1168 <main+0x48>
lea    0xe6d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r14
push   %rbx
sub    $0x10,%rsp
movl   $0x0,0xc(%rsp)
lea    0xeb9(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xec5(%rip),%rdi
lea    0xc(%rsp),%rsi
call   1050 <scanf@plt>
mov    0xc(%rsp),%ebx
test   %ebx,%ebx
je     1194 <main+0x64>
lea    0xeac(%rip),%r14
mov    %ebx,%ebp
shr    $0x1f,%ebp
add    %ebx,%ebp
mov    %ebp,%eax
and    $0xfffffffe,%eax
mov    %ebx,%esi
sub    %eax,%esi
mov    %r14,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
sar    %ebp
add    $0x1,%ebx
cmp    $0x2,%ebx
mov    %ebp,%ebx
ja     1170 <main+0x40>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret

LLVM IR (-O0):
@.str = [26 x i8] c"Enter a decimal number : \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 0, i32* %3
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = load i32, i32* %2
store i32 %8, i32* %4
store i32 1, i32* %5
br label %9
9: ; preds = %18, %0
%10 = load i32, i32* %4
%11 = icmp ne i32 %10, 0
br i1 %11, label %12, label %21
12: ; preds = %9
%13 = load i32, i32* %4
%14 = srem i32 %13, 2
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %14)
%16 = load i32, i32* %4
%17 = sdiv i32 %16, 2
store i32 %17, i32* %4
br label %18
18: ; preds = %12
%19 = load i32, i32* %5
%20 = add nsw i32 %19, 1
store i32 %20, i32* %5
br label %9
21: ; preds = %9
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [26 x i8] c"Enter a decimal number : \00"
@.str.1 = [3 x i8] c"%d\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%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 eq i32 %5, 0
br i1 %6, label %14, label %7
7: ; preds = %0, %7
%8 = phi i32 [ %11, %7 ], [ %5, %0 ]
%9 = srem i32 %8, 2
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32 %9)
%11 = sdiv i32 %8, 2
%12 = add i32 %8, 1
%13 = icmp ult i32 %12, 3
br i1 %13, label %14, label %7
14: ; preds = %7, %0
%15 = call i32 @putchar(i32 10)
ret i32 0
}