#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*/ puts(char *);
int /*<<< orphan*/ scanf(char *, int *);
int /*<<< orphan*/ system(char *);
int main_screen() {
  system("clear");
  puts("              ******************************************************");
  puts("              *                                                    *");
  puts("              *                                                    *");
  puts("              *       1. Rotating array, low efficiency            *");
  puts("              *                                                    *");
  puts("              *                                                    *");
  puts("              *       2. Rotating array, high efficiency           *");
  puts("              *                                                    *");
  puts("              *                                                    *");
  puts("              *       3. Rotating linked list                      *");
  puts("              *                                                    *");
  puts("              *                                                    *");
  puts("              ******************************************************");
  printf("              Input your option:");
  int option = 0;
  scanf("%d", &option);
  return option;
}


x86 assembly (clang, -O0):
<main_screen>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeb1(%rip),%rdi
call   1040 <system@plt>
lea    0xeab(%rip),%rdi
call   1030 <puts@plt>
lea    0xee4(%rip),%rdi
call   1030 <puts@plt>
lea    0xed8(%rip),%rdi
call   1030 <puts@plt>
lea    0xf11(%rip),%rdi
call   1030 <puts@plt>
lea    0xec0(%rip),%rdi
call   1030 <puts@plt>
lea    0xeb4(%rip),%rdi
call   1030 <puts@plt>
lea    0xf32(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9c(%rip),%rdi
call   1030 <puts@plt>
lea    0xe90(%rip),%rdi
call   1030 <puts@plt>
lea    0xf53(%rip),%rdi
call   1030 <puts@plt>
lea    0xe78(%rip),%rdi
call   1030 <puts@plt>
lea    0xe6c(%rip),%rdi
call   1030 <puts@plt>
lea    0xe1b(%rip),%rdi
call   1030 <puts@plt>
lea    0xf68(%rip),%rdi
call   1050 <printf@plt>
movl   $0x0,-0x4(%rbp)
lea    0xf76(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1060 <scanf@plt>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main_screen>:
push   %r14
push   %rbx
push   %rax
lea    0xeb5(%rip),%rdi
call   1040 <system@plt>
lea    0xeaf(%rip),%r14
mov    %r14,%rdi
call   1030 <puts@plt>
lea    0xee5(%rip),%rbx
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
lea    0xf13(%rip),%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
lea    0xf3c(%rip),%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
lea    0xf65(%rip),%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
mov    %r14,%rdi
call   1030 <puts@plt>
lea    0xf86(%rip),%rdi
call   1050 <printf@plt>
movl   $0x0,0x4(%rsp)
lea    0xf93(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [6 x i8] c"clear\00"
@.str.1 = [69 x i8] c" ******************************************************\00"
@.str.2 = [69 x i8] c" * *\00"
@.str.3 = [69 x i8] c" * 1. Rotating array, low efficiency *\00"
@.str.4 = [69 x i8] c" * 2. Rotating array, high efficiency *\00"
@.str.5 = [69 x i8] c" * 3. Rotating linked list *\00"
@.str.6 = [33 x i8] c" Input your option:\00"
@.str.7 = [3 x i8] c"%d\00"
define i32 @main_screen() {
%1 = alloca i32
%2 = call i32 @system(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.1, i64 0, i64 0))
%4 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%5 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%6 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.3, i64 0, i64 0))
%7 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%8 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%9 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.4, i64 0, i64 0))
%10 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%11 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%12 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.5, i64 0, i64 0))
%13 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%14 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%15 = call i32 @puts(i8* getelementptr inbounds ([69 x i8], [69 x i8]* @.str.1, i64 0, i64 0))
%16 = call i32 @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str.6, i64 0, i64 0))
store i32 0, i32* %1
%17 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0), i32* %1)
%18 = load i32, i32* %1
ret i32 %18
}

LLVM IR (-O2):
@.str = [6 x i8] c"clear\00"
@.str.1 = [69 x i8] c" ******************************************************\00"
@.str.2 = [69 x i8] c" * *\00"
@.str.3 = [69 x i8] c" * 1. Rotating array, low efficiency *\00"
@.str.4 = [69 x i8] c" * 2. Rotating array, high efficiency *\00"
@.str.5 = [69 x i8] c" * 3. Rotating linked list *\00"
@.str.6 = [33 x i8] c" Input your option:\00"
@.str.7 = [3 x i8] c"%d\00"
define i32 @main_screen() {
%1 = alloca i32
%2 = tail call i32 @system(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.1, i64 0, i64 0))
%4 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.3, i64 0, i64 0))
%7 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.4, i64 0, i64 0))
%10 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%12 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.5, i64 0, i64 0))
%13 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%14 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.2, i64 0, i64 0))
%15 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([69 x i8], [69 x i8]* @.str.1, i64 0, i64 0))
%16 = tail call i32 @printf(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 x i8]* @.str.6, i64 0, i64 0))
%17 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%18 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.7, i64 0, i64 0), i32* %1)
%19 = load i32, i32* %1
ret i32 %19
}