#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*/ flushall();
int /*<<< orphan*/ getchar();
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
main() {
  int num1;
  int num2;
  int num3;
  int num4;
  printf("Please Enter 4 Numbers: ");
  scanf("%d", &num1);
  scanf("%d", &num2);
  scanf("%d", &num3);
  scanf("%d", &num4);
  flushall();
  printf("You entered in reverse order: %d, %d, %d, %d.", num4, num3, num2,
         num1);
  getchar();
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeb1(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xebc(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1060 <scanf@plt>
lea    0xeac(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1060 <scanf@plt>
lea    0xe9c(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1060 <scanf@plt>
lea    0xe8c(%rip),%rdi
lea    -0x10(%rbp),%rsi
call   1060 <scanf@plt>
mov    $0x0,%al
call   1040 <flushall@plt>
mov    -0x10(%rbp),%esi
mov    -0xc(%rbp),%edx
mov    -0x8(%rbp),%ecx
mov    -0x4(%rbp),%r8d
lea    0xe6b(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    $0x0,%al
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xeb4(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xebf(%rip),%rbx
lea    0xc(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
lea    0x8(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
lea    0x4(%rsp),%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
mov    %rsp,%rsi
mov    %rbx,%rdi
call   1060 <scanf@plt>
xor    %eax,%eax
call   1040 <flushall@plt>
mov    (%rsp),%esi
mov    0x4(%rsp),%edx
mov    0x8(%rsp),%ecx
mov    0xc(%rsp),%r8d
lea    0xe72(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
call   1050 <getchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [25 x i8] c"Please Enter 4 Numbers: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [46 x i8] c"You entered in reverse order: %d, %d, %d, %d.\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%9 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %4)
%10 = call i32 (...) @flushall()
%11 = load i32, i32* %4
%12 = load i32, i32* %3
%13 = load i32, i32* %2
%14 = load i32, i32* %1
%15 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.2, i64 0, i64 0), i32 %11, i32 %12, i32 %13, i32 %14)
%16 = call i32 (...) @getchar()
ret i32 0
}

LLVM IR (-O2):
@.str = [25 x i8] c"Please Enter 4 Numbers: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [46 x i8] c"You entered in reverse order: %d, %d, %d, %d.\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = bitcast i32* %1 to i8*
%6 = bitcast i32* %2 to i8*
%7 = bitcast i32* %3 to i8*
%8 = bitcast i32* %4 to i8*
%9 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%11 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%12 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %3)
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %4)
%14 = call i32 (...) @flushall()
%15 = load i32, i32* %4
%16 = load i32, i32* %3
%17 = load i32, i32* %2
%18 = load i32, i32* %1
%19 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @.str.2, i64 0, i64 0), i32 %15, i32 %16, i32 %17, i32 %18)
%20 = call i32 (...) @getchar()
ret i32 0
}