#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);
int /*<<< orphan*/ scanf(char *, int *, int *, int *, int *);
int /*<<< orphan*/ system(char *);
main() {
  int A, B, C, D, DIFERENCA;
  scanf("%d %d %d %d", &A, &B, &C, &D);
  printf("DIFERENCA = %d\n", DIFERENCA = A * B - C * D);
  system("pause");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeba(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
lea    -0x10(%rbp),%rcx
lea    -0x14(%rbp),%r8
call   1050 <scanf@plt>
mov    -0x8(%rbp),%esi
imul   -0xc(%rbp),%esi
mov    -0x10(%rbp),%eax
imul   -0x14(%rbp),%eax
sub    %eax,%esi
mov    %esi,-0x18(%rbp)
lea    0xe97(%rip),%rdi
call   1040 <printf@plt>
lea    0xe9b(%rip),%rdi
call   1030 <system@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x18,%rsp
lea    0xec5(%rip),%rdi
lea    0x14(%rsp),%rsi
lea    0x10(%rsp),%rdx
lea    0xc(%rsp),%rcx
lea    0x8(%rsp),%r8
call   1050 <scanf@plt>
mov    0x10(%rsp),%esi
imul   0x14(%rsp),%esi
mov    0x8(%rsp),%eax
imul   0xc(%rsp),%eax
sub    %eax,%esi
lea    0xe9d(%rip),%rdi
call   1040 <printf@plt>
lea    0xea1(%rip),%rdi
call   1030 <system@plt>
xor    %eax,%eax
add    $0x18,%rsp
ret

LLVM IR (-O0):
@.str = [12 x i8] c"%d %d %d %d\00"
@.str.1 = [16 x i8] c"DIFERENCA = %d\0A\00"
@.str.2 = [6 x i8] c"pause\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
%6 = alloca i32
store i32 0, i32* %1
%7 = call i32 @scanf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32* %2, i32* %3, i32* %4, i32* %5)
%8 = load i32, i32* %2
%9 = load i32, i32* %3
%10 = mul nsw i32 %8, %9
%11 = load i32, i32* %4
%12 = load i32, i32* %5
%13 = mul nsw i32 %11, %12
%14 = sub nsw i32 %10, %13
store i32 %14, i32* %6
%15 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i32 %14)
%16 = call i32 @system(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [12 x i8] c"%d %d %d %d\00"
@.str.1 = [16 x i8] c"DIFERENCA = %d\0A\00"
@.str.2 = [6 x i8] c"pause\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 = call i32 @scanf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0), i32* %1, i32* %2, i32* %3, i32* %4)
%10 = load i32, i32* %1
%11 = load i32, i32* %2
%12 = mul nsw i32 %11, %10
%13 = load i32, i32* %3
%14 = load i32, i32* %4
%15 = mul nsw i32 %14, %13
%16 = sub nsw i32 %12, %15
%17 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.1, i64 0, i64 0), i32 %16)
%18 = call i32 @system(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i64 0, i64 0))
ret i32 0
}