#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 is_positive(int);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ scanf(char *, int *);
int main(void) {
  int nr;
  puts("Enter a number, & I'll tell you if it's pos or neg: ");
  scanf("%d", &nr);
  int buffer = is_positive(nr);
  if (buffer == 1)
    puts("\nYout number is positive");
  else
    puts("\nYour number is negative");
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
call   1030 <puts@plt>
lea    0xee3(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%edi
call   1050 <is_positive@plt>
mov    %eax,-0xc(%rbp)
cmpl   $0x1,-0xc(%rbp)
jne    1181 <main+0x51>
lea    0xec1(%rip),%rdi
call   1030 <puts@plt>
jmp    118d <main+0x5d>
lea    0xec9(%rip),%rdi
call   1030 <puts@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
call   1030 <puts@plt>
lea    0xef1(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%edi
call   1050 <is_positive@plt>
cmp    $0x1,%eax
lea    0xed7(%rip),%rax
lea    0xee9(%rip),%rdi
cmove  %rax,%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [53 x i8] c"Enter a number, & I'll tell you if it's pos or neg: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [25 x i8] c"\0AYout number is positive\00"
@.str.3 = [25 x i8] c"\0AYour number is negative\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 @puts(i8* getelementptr inbounds ([53 x i8], [53 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 = load i32, i32* %2
%7 = call i32 @is_positive(i32 %6)
store i32 %7, i32* %3
%8 = load i32, i32* %3
%9 = icmp eq i32 %8, 1
br i1 %9, label %10, label %12
10: ; preds = %0
%11 = call i32 @puts(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0))
br label %14
12: ; preds = %0
%13 = call i32 @puts(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0))
br label %14
14: ; preds = %12, %10
%15 = load i32, i32* %1
ret i32 %15
}

LLVM IR (-O2):
@.str = [53 x i8] c"Enter a number, & I'll tell you if it's pos or neg: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [25 x i8] c"\0AYout number is positive\00"
@.str.3 = [25 x i8] c"\0AYour number is negative\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([53 x i8], [53 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 = call i32 @is_positive(i32 %5)
%7 = icmp eq i32 %6, 1
%8 = select i1 %7, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0)
%9 = call i32 @puts(i8* dereferenceable(1) %8)
ret i32 0
}