#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(void) {
  int myvariable;
  printf("Enter a number between 1 and 4:");
  scanf("%d", &myvariable);
  switch (myvariable) {
  case 1:
    printf("1");
    break;
  case 2:
    printf("2");
    break;
  case 3:
    printf("3");
    break;
  case 4:
    printf("4");
    break;
  default:
    printf("Your number is not between 1 and 4");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeda(%rip),%rdi
call   1030 <printf@plt>
lea    0xeee(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x3,%eax
ja     11b8 <main+0x98>
mov    -0x10(%rbp),%rax
lea    0xe95(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xeb8(%rip),%rdi
call   1030 <printf@plt>
jmp    11c4 <main+0xa4>
lea    0xea9(%rip),%rdi
call   1030 <printf@plt>
jmp    11c4 <main+0xa4>
lea    0xe9a(%rip),%rdi
call   1030 <printf@plt>
jmp    11c4 <main+0xa4>
lea    0xeac(%rip),%rdi
call   1030 <printf@plt>
jmp    11c4 <main+0xa4>
lea    0xe7a(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
call   1040 <printf@plt>
lea    0xeec(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0xffffffff,%eax
cmp    $0x3,%eax
ja     1171 <main+0x41>
lea    0xe9f(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
mov    $0x31,%edi
jmp    1192 <main+0x62>
lea    0xebb(%rip),%rdi
call   1040 <printf@plt>
jmp    1197 <main+0x67>
mov    $0x32,%edi
jmp    1192 <main+0x62>
mov    $0x33,%edi
jmp    1192 <main+0x62>
mov    $0x34,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [32 x i8] c"Enter a number between 1 and 4:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [2 x i8] c"1\00"
@.str.3 = [2 x i8] c"2\00"
@.str.4 = [2 x i8] c"3\00"
@.str.5 = [2 x i8] c"4\00"
@.str.6 = [35 x i8] c"Your number is not between 1 and 4\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @printf(i8* getelementptr inbounds ([32 x i8], [32 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
switch i32 %5, label %14 [
i32 1, label %6
i32 2, label %8
i32 3, label %10
i32 4, label %12
]
6: ; preds = %0
%7 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.2, i64 0, i64 0))
br label %16
8: ; preds = %0
%9 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.3, i64 0, i64 0))
br label %16
10: ; preds = %0
%11 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
br label %16
12: ; preds = %0
%13 = call i32 @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.5, i64 0, i64 0))
br label %16
14: ; preds = %0
%15 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.6, i64 0, i64 0))
br label %16
16: ; preds = %14, %12, %10, %8, %6
ret i32 0
}

LLVM IR (-O2):
@.str = [32 x i8] c"Enter a number between 1 and 4:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.6 = [35 x i8] c"Your number is not between 1 and 4\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([32 x i8], [32 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
switch i32 %5, label %14 [
i32 1, label %6
i32 2, label %8
i32 3, label %10
i32 4, label %12
]
6: ; preds = %0
%7 = call i32 @putchar(i32 49)
br label %16
8: ; preds = %0
%9 = call i32 @putchar(i32 50)
br label %16
10: ; preds = %0
%11 = call i32 @putchar(i32 51)
br label %16
12: ; preds = %0
%13 = call i32 @putchar(i32 52)
br label %16
14: ; preds = %0
%15 = call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([35 x i8], [35 x i8]* @.str.6, i64 0, i64 0))
br label %16
16: ; preds = %14, %12, %10, %8, %6
ret i32 0
}