#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() {
  int ano;
  printf("Digite um ano: ");
  scanf("%d", &ano);
  if (ano % 400 == 0) {
    printf("Ano %d é bissexto!", ano);
  } else if (ano % 4 == 0 && ano % 100 != 0) {
    printf("Ano %d é bissexto!", ano);
  } else {
    printf("Ano %d não é bissexto!", ano);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xecc(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    $0x190,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1177 <main+0x57>
mov    -0x8(%rbp),%esi
lea    0xea8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11cb <main+0xab>
mov    -0x8(%rbp),%eax
mov    $0x4,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    11b5 <main+0x95>
mov    -0x8(%rbp),%eax
mov    $0x64,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
je     11b5 <main+0x95>
mov    -0x8(%rbp),%esi
lea    0xe6a(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11c6 <main+0xa6>
mov    -0x8(%rbp),%esi
lea    0xe68(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11cb <main+0xab>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
lea    0xeda(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
imul   $0xc28f5c29,%esi,%eax
add    $0x51eb850,%eax
mov    %eax,%ecx
ror    $0x4,%ecx
cmp    $0xa3d70b,%ecx
jb     1180 <main+0x60>
ror    $0x2,%eax
cmp    $0x28f5c29,%eax
lea    0xebc(%rip),%rax
lea    0xea1(%rip),%rdi
cmovb  %rax,%rdi
test   $0x3,%sil
cmovne %rax,%rdi
jmp    1187 <main+0x67>
lea    0xe8c(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [16 x i8] c"Digite um ano: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"Ano %d \C3\A9 bissexto!\00"
@.str.3 = [25 x i8] c"Ano %d n\C3\A3o \C3\A9 bissexto!\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([16 x i8], [16 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
%6 = srem i32 %5, 400
%7 = icmp eq i32 %6, 0
br i1 %7, label %8, label %11
8: ; preds = %0
%9 = load i32, i32* %2
%10 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %9)
br label %26
11: ; preds = %0
%12 = load i32, i32* %2
%13 = srem i32 %12, 4
%14 = icmp eq i32 %13, 0
br i1 %14, label %15, label %22
15: ; preds = %11
%16 = load i32, i32* %2
%17 = srem i32 %16, 100
%18 = icmp ne i32 %17, 0
br i1 %18, label %19, label %22
19: ; preds = %15
%20 = load i32, i32* %2
%21 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %20)
br label %25
22: ; preds = %15, %11
%23 = load i32, i32* %2
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i32 %23)
br label %25
25: ; preds = %22, %19
br label %26
26: ; preds = %25, %8
ret i32 0
}

LLVM IR (-O2):
@.str = [16 x i8] c"Digite um ano: \00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"Ano %d \C3\A9 bissexto!\00"
@.str.3 = [25 x i8] c"Ano %d n\C3\A3o \C3\A9 bissexto!\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 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
%6 = srem i32 %5, 400
%7 = icmp eq i32 %6, 0
br i1 %7, label %15, label %8
8: ; preds = %0
%9 = and i32 %5, 3
%10 = icmp ne i32 %9, 0
%11 = srem i32 %5, 100
%12 = icmp eq i32 %11, 0
%13 = or i1 %10, %12
%14 = select i1 %13, i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0)
br label %15
15: ; preds = %8, %0
%16 = phi i8* [ getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), %0 ], [ %14, %8 ]
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) %16, i32 %5)
ret i32 0
}