#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(void) {
  int N, n, remainder, reversen = 0;
  printf("Enter number: ");
  scanf("%d", &n);
  N = n;
  while (n != 0) {
    remainder = n % 10;
    reversen = reversen * 10 + remainder;
    n /= 10;
  }
  (N == reversen) ? printf("number is palindrome\n")
                  : printf("not palindrome\n");
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x10(%rbp)
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xecd(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0x4(%rbp)
cmpl   $0x0,-0x8(%rbp)
je     1186 <main+0x66>
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %edx,-0xc(%rbp)
imul   $0xa,-0x10(%rbp),%eax
add    -0xc(%rbp),%eax
mov    %eax,-0x10(%rbp)
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    %eax,-0x8(%rbp)
jmp    1151 <main+0x31>
mov    -0x4(%rbp),%eax
cmp    -0x10(%rbp),%eax
jne    11a3 <main+0x83>
lea    0xe79(%rip),%rdi
call   1030 <printf@plt>
jmp    11af <main+0x8f>
lea    0xe7e(%rip),%rdi
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
call   1040 <printf@plt>
lea    0xecb(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%r8d
test   %r8d,%r8d
je     11aa <main+0x7a>
xor    %edx,%edx
mov    %r8d,%ecx
nopl   (%rax)
lea    (%rdx,%rdx,4),%edx
movslq %ecx,%rax
imul   $0x66666667,%rax,%rcx
mov    %rcx,%rdi
shr    $0x3f,%rdi
sar    $0x22,%rcx
add    %edi,%ecx
lea    (%rcx,%rcx,1),%edi
lea    (%rdi,%rdi,4),%edi
mov    %eax,%esi
sub    %edi,%esi
lea    (%rsi,%rdx,2),%edx
add    $0x9,%eax
cmp    $0x12,%eax
ja     1160 <main+0x30>
mov    %ecx,0x4(%rsp)
cmp    %edx,%r8d
lea    0xe84(%rip),%rax
lea    0xe6e(%rip),%rdi
cmove  %rax,%rdi
jmp    11b1 <main+0x81>
lea    0xe70(%rip),%rdi
call   1030 <puts@plt>
pop    %rax
ret

LLVM IR (-O0):
@.str = [15 x i8] c"Enter number: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [22 x i8] c"number is palindrome\0A\00"
@.str.3 = [16 x i8] c"not palindrome\0A\00"
define void @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %4
%5 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%7 = load i32, i32* %2
store i32 %7, i32* %1
br label %8
8: ; preds = %11, %0
%9 = load i32, i32* %2
%10 = icmp ne i32 %9, 0
br i1 %10, label %11, label %20
11: ; preds = %8
%12 = load i32, i32* %2
%13 = srem i32 %12, 10
store i32 %13, i32* %3
%14 = load i32, i32* %4
%15 = mul nsw i32 %14, 10
%16 = load i32, i32* %3
%17 = add nsw i32 %15, %16
store i32 %17, i32* %4
%18 = load i32, i32* %2
%19 = sdiv i32 %18, 10
store i32 %19, i32* %2
br label %8
20: ; preds = %8
%21 = load i32, i32* %1
%22 = load i32, i32* %4
%23 = icmp eq i32 %21, %22
br i1 %23, label %24, label %26
24: ; preds = %20
%25 = call i32 @printf(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.2, i64 0, i64 0))
br label %28
26: ; preds = %20
%27 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.3, i64 0, i64 0))
br label %28
28: ; preds = %26, %24
%29 = phi i32 [ %25, %24 ], [ %27, %26 ]
ret void
}

LLVM IR (-O2):
@.str = [15 x i8] c"Enter number: \00"
@.str.1 = [3 x i8] c"%d\00"
@str = [15 x i8] c"not palindrome\00"
@str.4 = [21 x i8] c"number is palindrome\00"
define void @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 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 %19, label %7
7: ; preds = %0, %7
%8 = phi i32 [ %12, %7 ], [ 0, %0 ]
%9 = phi i32 [ %13, %7 ], [ %5, %0 ]
%10 = srem i32 %9, 10
%11 = mul nsw i32 %8, 10
%12 = add nsw i32 %11, %10
%13 = sdiv i32 %9, 10
%14 = add i32 %9, 9
%15 = icmp ult i32 %14, 19
br i1 %15, label %16, label %7
16: ; preds = %7
store i32 %13, i32* %1
%17 = icmp eq i32 %5, %12
%18 = select i1 %17, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @str.4, i64 0, i64 0), i8* getelementptr inbounds ([15 x i8], [15 x i8]* @str, i64 0, i64 0)
br label %19
19: ; preds = %16, %0
%20 = phi i8* [ getelementptr inbounds ([21 x i8], [21 x i8]* @str.4, i64 0, i64 0), %0 ], [ %18, %16 ]
%21 = call i32 @puts(i8* dereferenceable(1) %20)
ret void
}