#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 menu() {
  printf("\nSelecciona una opcion: \n");
  printf("[1] Obtener una raiz de grado n\n");
  printf("[2] Resolver una ecuacion de segundo grado\n");
  printf("[3] Mostrar los senos y cosenos de 30, 45, 60 y 90 grados\n");
  printf("[4] Salir\n");
  printf("Opcion: ");
  int n;
  scanf("%d", &n);
  printf("\n");
  if (n < 0 || n > 4)
    return -1;
  else
    return n;
}


x86 assembly (clang, -O0):
<menu>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xed1(%rip),%rdi
call   1030 <printf@plt>
lea    0xedf(%rip),%rdi
call   1030 <printf@plt>
lea    0xef4(%rip),%rdi
call   1030 <printf@plt>
lea    0xf14(%rip),%rdi
call   1030 <printf@plt>
lea    0xf43(%rip),%rdi
call   1030 <printf@plt>
lea    0xf42(%rip),%rdi
call   1030 <printf@plt>
lea    0xf3f(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
lea    0xe91(%rip),%rdi
call   1030 <printf@plt>
cmpl   $0x0,-0x8(%rbp)
jl     11a0 <menu+0x80>
cmpl   $0x4,-0x8(%rbp)
jle    11ac <menu+0x8c>
movl   $0xffffffff,-0x4(%rbp)
jmp    11b2 <menu+0x92>
mov    -0x8(%rbp),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<menu>:
push   %rax
lea    0xec4(%rip),%rdi
call   1040 <puts@plt>
lea    0xed1(%rip),%rdi
call   1040 <puts@plt>
lea    0xee5(%rip),%rdi
call   1040 <puts@plt>
lea    0xf04(%rip),%rdi
call   1040 <puts@plt>
lea    0xf32(%rip),%rdi
call   1040 <puts@plt>
lea    0xe7c(%rip),%rdi
call   1050 <printf@plt>
lea    0xe79(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
mov    0x4(%rsp),%ecx
cmp    $0x5,%ecx
mov    $0xffffffff,%eax
cmovb  %ecx,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [26 x i8] c"\0ASelecciona una opcion: \0A\00"
@.str.1 = [33 x i8] c"[1] Obtener una raiz de grado n\0A\00"
@.str.2 = [44 x i8] c"[2] Resolver una ecuacion de segundo grado\0A\00"
@.str.3 = [59 x i8] c"[3] Mostrar los senos y cosenos de 30, 45, 60 y 90 grados\0A\00"
@.str.4 = [11 x i8] c"[4] Salir\0A\00"
@.str.5 = [9 x i8] c"Opcion: \00"
@.str.6 = [3 x i8] c"%d\00"
@.str.7 = [2 x i8] c"\0A\00"
define i32 @menu() {
%1 = alloca i32
%2 = alloca i32
%3 = call i32 @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0))
%4 = call i32 @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.1, i64 0, i64 0))
%5 = call i32 @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.2, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str.3, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.4, i64 0, i64 0))
%8 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.5, i64 0, i64 0))
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.6, i64 0, i64 0), i32* %2)
%10 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.7, i64 0, i64 0))
%11 = load i32, i32* %2
%12 = icmp slt i32 %11, 0
br i1 %12, label %16, label %13
13: ; preds = %0
%14 = load i32, i32* %2
%15 = icmp sgt i32 %14, 4
br i1 %15, label %16, label %17
16: ; preds = %13, %0
store i32 -1, i32* %1
br label %19
17: ; preds = %13
%18 = load i32, i32* %2
store i32 %18, i32* %1
br label %19
19: ; preds = %17, %16
%20 = load i32, i32* %1
ret i32 %20
}

LLVM IR (-O2):
@.str.5 = [9 x i8] c"Opcion: \00"
@.str.6 = [3 x i8] c"%d\00"
@str = [25 x i8] c"\0ASelecciona una opcion: \00"
@str.8 = [32 x i8] c"[1] Obtener una raiz de grado n\00"
@str.9 = [43 x i8] c"[2] Resolver una ecuacion de segundo grado\00"
@str.10 = [58 x i8] c"[3] Mostrar los senos y cosenos de 30, 45, 60 y 90 grados\00"
@str.11 = [10 x i8] c"[4] Salir\00"
define i32 @menu() {
%1 = alloca i32
%2 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @str, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 x i8]* @str.8, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @str.9, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([58 x i8], [58 x i8]* @str.10, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([10 x i8], [10 x i8]* @str.11, i64 0, i64 0))
%7 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([9 x i8], [9 x i8]* @.str.5, i64 0, i64 0))
%8 = bitcast i32* %1 to i8*
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.6, i64 0, i64 0), i32* %1)
%10 = call i32 @putchar(i32 10)
%11 = load i32, i32* %1
%12 = icmp ugt i32 %11, 4
%13 = select i1 %12, i32 -1, i32 %11
ret i32 %13
}