#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 /*<<< orphan*/ swap(int *, int *);
int main() {
  int i, n, a[2];
  n = 2;
  for (i = 0; i < n; i++)
    scanf("%d", &a[i]);
  printf("Valores ingresados:\n");
  for (i = 0; i < n; i++)
    printf("%5d", a[i]);
  printf("\nIntercambio de valores:\n");
  swap(&a[0], &a[1]);
  for (i = 0; i < n; i++)
    printf("%5d", a[i]);
  printf("\n");
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x2,-0xc(%rbp)
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    1182 <main+0x52>
movslq -0x8(%rbp),%rax
lea    -0x14(%rbp),%rsi
shl    $0x2,%rax
add    %rax,%rsi
lea    0xe91(%rip),%rdi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    114d <main+0x1d>
lea    0xe7a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    11c7 <main+0x97>
movslq -0x8(%rbp),%rax
mov    -0x14(%rbp,%rax,4),%esi
lea    0xe66(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    1197 <main+0x67>
lea    0xe4e(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    -0x14(%rbp),%rdi
lea    -0x14(%rbp),%rsi
add    $0x4,%rsi
call   1050 <swap@plt>
movl   $0x0,-0x8(%rbp)
mov    -0x8(%rbp),%eax
cmp    -0xc(%rbp),%eax
jge    121d <main+0xed>
movslq -0x8(%rbp),%rax
mov    -0x14(%rbp,%rax,4),%esi
lea    0xe10(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x8(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x8(%rbp)
jmp    11ed <main+0xbd>
lea    0xe10(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x10,%rsp
lea    0xea0(%rip),%rbx
lea    0x8(%rsp),%r14
mov    %rbx,%rdi
mov    %r14,%rsi
call   1060 <scanf@plt>
lea    0xc(%rsp),%r15
mov    %rbx,%rdi
mov    %r15,%rsi
call   1060 <scanf@plt>
lea    0xe80(%rip),%rdi
call   1040 <puts@plt>
mov    0x8(%rsp),%esi
lea    0xe6c(%rip),%rbx
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0xc(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
lea    0xe65(%rip),%rdi
call   1040 <puts@plt>
mov    %r14,%rdi
mov    %r15,%rsi
call   1070 <swap@plt>
mov    0x8(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    0xc(%rsp),%esi
mov    %rbx,%rdi
xor    %eax,%eax
call   1050 <printf@plt>
mov    $0xa,%edi
call   1030 <putchar@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [21 x i8] c"Valores ingresados:\0A\00"
@.str.2 = [4 x i8] c"%5d\00"
@.str.3 = [26 x i8] c"\0AIntercambio de valores:\0A\00"
@.str.4 = [2 x i8] c"\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca [2 x i32]
store i32 0, i32* %1
store i32 2, i32* %3
store i32 0, i32* %2
br label %5
5: ; preds = %14, %0
%6 = load i32, i32* %2
%7 = load i32, i32* %3
%8 = icmp slt i32 %6, %7
br i1 %8, label %9, label %17
9: ; preds = %5
%10 = load i32, i32* %2
%11 = sext i32 %10 to i64
%12 = getelementptr inbounds [2 x i32], [2 x i32]* %4, i64 0, i64 %11
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %12)
br label %14
14: ; preds = %9
%15 = load i32, i32* %2
%16 = add nsw i32 %15, 1
store i32 %16, i32* %2
br label %5
17: ; preds = %5
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.1, i64 0, i64 0))
store i32 0, i32* %2
br label %19
19: ; preds = %29, %17
%20 = load i32, i32* %2
%21 = load i32, i32* %3
%22 = icmp slt i32 %20, %21
br i1 %22, label %23, label %32
23: ; preds = %19
%24 = load i32, i32* %2
%25 = sext i32 %24 to i64
%26 = getelementptr inbounds [2 x i32], [2 x i32]* %4, i64 0, i64 %25
%27 = load i32, i32* %26
%28 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %27)
br label %29
29: ; preds = %23
%30 = load i32, i32* %2
%31 = add nsw i32 %30, 1
store i32 %31, i32* %2
br label %19
32: ; preds = %19
%33 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.3, i64 0, i64 0))
%34 = getelementptr inbounds [2 x i32], [2 x i32]* %4, i64 0, i64 0
%35 = getelementptr inbounds [2 x i32], [2 x i32]* %4, i64 0, i64 1
%36 = call i32 @swap(i32* %34, i32* %35)
store i32 0, i32* %2
br label %37
37: ; preds = %47, %32
%38 = load i32, i32* %2
%39 = load i32, i32* %3
%40 = icmp slt i32 %38, %39
br i1 %40, label %41, label %50
41: ; preds = %37
%42 = load i32, i32* %2
%43 = sext i32 %42 to i64
%44 = getelementptr inbounds [2 x i32], [2 x i32]* %4, i64 0, i64 %43
%45 = load i32, i32* %44
%46 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %45)
br label %47
47: ; preds = %41
%48 = load i32, i32* %2
%49 = add nsw i32 %48, 1
store i32 %49, i32* %2
br label %37
50: ; preds = %37
%51 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.4, i64 0, i64 0))
%52 = load i32, i32* %1
ret i32 %52
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%5d\00"
@str = [20 x i8] c"Valores ingresados:\00"
@str.5 = [25 x i8] c"\0AIntercambio de valores:\00"
define i32 @main() {
%1 = alloca [2 x i32]
%2 = bitcast [2 x i32]* %1 to i8*
%3 = getelementptr inbounds [2 x i32], [2 x i32]* %1, i64 0, i64 0
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %3)
%5 = getelementptr inbounds [2 x i32], [2 x i32]* %1, i64 0, i64 1
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %5)
%7 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([20 x i8], [20 x i8]* @str, i64 0, i64 0))
%8 = load i32, i32* %3
%9 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %8)
%10 = load i32, i32* %5
%11 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %10)
%12 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @str.5, i64 0, i64 0))
%13 = call i32 @swap(i32* %3, i32* %5)
%14 = load i32, i32* %3
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %14)
%16 = load i32, i32* %5
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %16)
%18 = call i32 @putchar(i32 10)
ret i32 0
}