#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("Enter a number: ");
  scanf("%d", &num);
  if (num < 0)
    printf("Number is negative\n");
  else if (num > 0)
    printf("Number is positive\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xecf(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jge    1166 <main+0x46>
lea    0xeb8(%rip),%rdi
call   1030 <printf@plt>
jmp    1181 <main+0x61>
cmpl   $0x0,-0x8(%rbp)
jle    117c <main+0x5c>
lea    0xeb1(%rip),%rdi
call   1030 <printf@plt>
jmp    1181 <main+0x61>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
call   1040 <printf@plt>
lea    0xecd(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
cmpl   $0x0,0x4(%rsp)
js     1160 <main+0x30>
je     116c <main+0x3c>
lea    0xeb6(%rip),%rdi
jmp    1167 <main+0x37>
lea    0xec0(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Enter a number: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"Number is negative\0A\00"
@.str.3 = [20 x i8] c"Number is positive\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 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 = icmp slt i32 %5, 0
br i1 %6, label %7, label %9
7: ; preds = %0
%8 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0))
br label %15
9: ; preds = %0
%10 = load i32, i32* %2
%11 = icmp sgt i32 %10, 0
br i1 %11, label %12, label %14
12: ; preds = %9
%13 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.3, i64 0, i64 0))
br label %14
14: ; preds = %12, %9
br label %15
15: ; preds = %14, %7
ret i32 0
}

LLVM IR (-O2):
@.str = [17 x i8] c"Enter a number: \00"
@.str.1 = [3 x i8] c"%d\00"
@str = [19 x i8] c"Number is positive\00"
@str.4 = [19 x i8] c"Number is negative\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 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 slt i32 %5, 0
br i1 %6, label %9, label %7
7: ; preds = %0
%8 = icmp eq i32 %5, 0
br i1 %8, label %12, label %9
9: ; preds = %7, %0
%10 = phi i8* [ getelementptr inbounds ([19 x i8], [19 x i8]* @str.4, i64 0, i64 0), %0 ], [ getelementptr inbounds ([19 x i8], [19 x i8]* @str, i64 0, i64 0), %7 ]
%11 = call i32 @puts(i8* dereferenceable(1) %10)
br label %12
12: ; preds = %9, %7
ret i32 0
}