#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 checker(int);
int /*<<< orphan*/ flushall();
int /*<<< orphan*/ getchar();
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ scanf(char *, int *);
main() {
  int num = 0;
  int return_value;
  printf("Please enter a number to be checked if odd or even\n");
  scanf("%d", &num);
  flushall();
  return_value = checker(num);
  if (return_value == 0) {
    printf("\n0");
  } else {
    printf("\n1");
  }
  printf("\n\n1: represents an even number\n0: represents an odd number");
  getchar();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
lea    0xe93(%rip),%rdi
call   1030 <printf@plt>
lea    0xebb(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1070 <scanf@plt>
mov    $0x0,%al
call   1040 <flushall@plt>
mov    -0x8(%rbp),%edi
call   1060 <checker@plt>
mov    %eax,-0xc(%rbp)
cmpl   $0x0,-0xc(%rbp)
jne    11af <main+0x5f>
lea    0xe92(%rip),%rdi
call   1030 <printf@plt>
jmp    11bb <main+0x6b>
lea    0xe84(%rip),%rdi
call   1030 <printf@plt>
lea    0xe7b(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <getchar@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
movl   $0x0,0x4(%rsp)
lea    0xed4(%rip),%rdi
call   1030 <puts@plt>
lea    0xe84(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1080 <scanf@plt>
xor    %eax,%eax
call   1050 <flushall@plt>
mov    0x4(%rsp),%edi
call   1070 <checker@plt>
test   %eax,%eax
lea    0xe64(%rip),%rax
lea    0xe60(%rip),%rdi
cmove  %rax,%rdi
call   1040 <printf@plt>
lea    0xe53(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
call   1060 <getchar@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [52 x i8] c"Please enter a number to be checked if odd or even\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [3 x i8] c"\0A0\00"
@.str.3 = [3 x i8] c"\0A1\00"
@.str.4 = [59 x i8] c"\0A\0A1: represents an even number\0A0: represents an odd number\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
%4 = call i32 @printf(i8* getelementptr inbounds ([52 x i8], [52 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%6 = call i32 (...) @flushall()
%7 = load i32, i32* %2
%8 = call i32 @checker(i32 %7)
store i32 %8, i32* %3
%9 = load i32, i32* %3
%10 = icmp eq i32 %9, 0
br i1 %10, label %11, label %13
11: ; preds = %0
%12 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %15
13: ; preds = %0
%14 = call i32 @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0))
br label %15
15: ; preds = %13, %11
%16 = call i32 @printf(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.4, i64 0, i64 0))
%17 = call i32 (...) @getchar()
%18 = load i32, i32* %1
ret i32 %18
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [3 x i8] c"\0A0\00"
@.str.3 = [3 x i8] c"\0A1\00"
@.str.4 = [59 x i8] c"\0A\0A1: represents an even number\0A0: represents an odd number\00"
@str = [51 x i8] c"Please enter a number to be checked if odd or even\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([51 x i8], [51 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 = call i32 (...) @flushall()
%6 = load i32, i32* %1
%7 = call i32 @checker(i32 %6)
%8 = icmp eq i32 %7, 0
%9 = select i1 %8, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.3, i64 0, i64 0)
%10 = call i32 @printf(i8* dereferenceable(1) %9)
%11 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([59 x i8], [59 x i8]* @.str.4, i64 0, i64 0))
%12 = call i32 (...) @getchar()
ret i32 0
}