#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 *, char *);
scalar_t__ strcmp(char *, char *);
int /*<<< orphan*/ strcpy(char *, char *);
int /*<<< orphan*/ strrev(char *);
int polindrome() {
  char a[100];
  char b[100];
  scanf("%s", a);
  strcpy(b, a);
  strrev(b);
  if (strcmp(a, b) == 0) {
    printf("1");
  } else {
    printf("0");
  }
  return 0;
}


x86 assembly (clang, -O0):
<polindrome>:
push   %rbp
mov    %rsp,%rbp
sub    $0xe0,%rsp
lea    -0x70(%rbp),%rsi
lea    0xe9a(%rip),%rdi
call   1060 <scanf@plt>
lea    -0xe0(%rbp),%rdi
lea    -0x70(%rbp),%rsi
call   1030 <strcpy@plt>
lea    -0xe0(%rbp),%rdi
call   1070 <strrev@plt>
lea    -0x70(%rbp),%rdi
lea    -0xe0(%rbp),%rsi
call   1050 <strcmp@plt>
cmp    $0x0,%rax
jne    11b2 <polindrome+0x62>
lea    0xe5b(%rip),%rdi
call   1040 <printf@plt>
jmp    11be <polindrome+0x6e>
lea    0xe4c(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
add    $0xe0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<polindrome>:
push   %r14
push   %rbx
sub    $0xd8,%rsp
lea    0xe9f(%rip),%rdi
lea    0x70(%rsp),%r14
mov    %r14,%rsi
call   1060 <scanf@plt>
mov    %rsp,%rbx
mov    %rbx,%rdi
mov    %r14,%rsi
call   1040 <strcpy@plt>
mov    %rbx,%rdi
call   1070 <strrev@plt>
mov    %r14,%rdi
mov    %rbx,%rsi
call   1050 <strcmp@plt>
xor    %edi,%edi
test   %rax,%rax
sete   %dil
or     $0x30,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0xd8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%s\00"
@.str.1 = [2 x i8] c"1\00"
@.str.2 = [2 x i8] c"0\00"
define i32 @polindrome() {
%1 = alloca [100 x i8]
%2 = alloca [100 x i8]
%3 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %3)
%5 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%6 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%7 = call i32 @strcpy(i8* %5, i8* %6)
%8 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%9 = call i32 @strrev(i8* %8)
%10 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%11 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%12 = call i64 @strcmp(i8* %10, i8* %11)
%13 = icmp eq i64 %12, 0
br i1 %13, label %14, label %16
14: ; preds = %0
%15 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
br label %18
16: ; preds = %0
%17 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %18
18: ; preds = %16, %14
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%s\00"
define i32 @polindrome() {
%1 = alloca [100 x i8]
%2 = alloca [100 x i8]
%3 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%4 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %3)
%6 = call i32 @strcpy(i8* %4, i8* %3)
%7 = call i32 @strrev(i8* %4)
%8 = call i64 @strcmp(i8* %3, i8* %4)
%9 = icmp eq i64 %8, 0
%10 = select i1 %9, i32 49, i32 48
%11 = call i32 @putchar(i32 %10)
ret i32 0
}