#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 num;
  printf("please input a number:\n");
  scanf("%d", &num);
  if (num / 100 == num % 10)
    printf("num(%d) is symmetry number.", num);
  else
    printf("num(%d) is  not a symmetry number.", num);
  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    0xed4(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    $0x64,%ecx
cltd
idiv   %ecx
mov    %eax,-0xc(%rbp)
mov    -0x8(%rbp),%eax
mov    $0xa,%ecx
cltd
idiv   %ecx
mov    -0xc(%rbp),%eax
cmp    %edx,%eax
jne    1187 <main+0x67>
mov    -0x8(%rbp),%esi
lea    0xea0(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1198 <main+0x78>
mov    -0x8(%rbp),%esi
lea    0xea6(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xf0a(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movslq 0x4(%rsp),%rsi
imul   $0x51eb851f,%rsi,%rax
mov    %rax,%rcx
shr    $0x3f,%rcx
sar    $0x25,%rax
add    %ecx,%eax
imul   $0x66666667,%rsi,%rcx
mov    %rcx,%rdx
shr    $0x3f,%rdx
sar    $0x22,%rcx
add    %edx,%ecx
add    %ecx,%ecx
lea    (%rcx,%rcx,4),%ecx
mov    %esi,%edx
sub    %ecx,%edx
cmp    %edx,%eax
lea    0xe76(%rip),%rax
lea    0xe8b(%rip),%rdi
cmove  %rax,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [24 x i8] c"please input a number:\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [28 x i8] c"num(%d) is symmetry number.\00"
@.str.3 = [35 x i8] c"num(%d) is not a symmetry number.\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 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* %2)
%5 = load i32, i32* %2
%6 = sdiv i32 %5, 100
%7 = load i32, i32* %2
%8 = srem i32 %7, 10
%9 = icmp eq i32 %6, %8
br i1 %9, label %10, label %13
10: ; preds = %0
%11 = load i32, i32* %2
%12 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i32 %11)
br label %16
13: ; preds = %0
%14 = load i32, i32* %2
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0), i32 %14)
br label %16
16: ; preds = %13, %10
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [28 x i8] c"num(%d) is symmetry number.\00"
@.str.3 = [35 x i8] c"num(%d) is not a symmetry number.\00"
@str = [23 x i8] c"please input a number:\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 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 = sdiv i32 %5, 100
%7 = srem i32 %5, 10
%8 = icmp eq i32 %6, %7
%9 = select i1 %8, i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0)
%10 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) %9, i32 %5)
ret i32 0
}