#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 iYear;
  printf("\n Enter a year\n");
  scanf("%d", &iYear);
  if (iYear % 4 == 0 && iYear % 100 != 0)
    printf("\n%d is a leap year\n", iYear);
  else if (iYear % 400 == 0)
    printf("\n%d is a leap year\n", iYear);
  else
    printf("\n%d is not a leap year\n", iYear);
  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    $0x4,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    118b <main+0x6b>
mov    -0x8(%rbp),%eax
mov    $0x64,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
je     118b <main+0x6b>
mov    -0x8(%rbp),%esi
lea    0xe94(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11cb <main+0xab>
mov    -0x8(%rbp),%eax
mov    $0x190,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    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    0xef7(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
movslq 0x4(%rsp),%rsi
test   $0x3,%sil
jne    117f <main+0x4f>
imul   $0x51eb851f,%rsi,%rax
mov    %rax,%rcx
shr    $0x3f,%rcx
sar    $0x25,%rax
add    %ecx,%eax
imul   $0x64,%eax,%eax
mov    %esi,%ecx
sub    %eax,%ecx
je     117f <main+0x4f>
lea    0xe86(%rip),%rdi
jmp    11a4 <main+0x74>
imul   $0xc28f5c29,%esi,%eax
add    $0x51eb850,%eax
ror    $0x4,%eax
cmp    $0xa3d70b,%eax
lea    0xe6a(%rip),%rax
lea    0xe77(%rip),%rdi
cmovb  %rax,%rdi
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [16 x i8] c"\0A Enter a year\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"\0A%d is a leap year\0A\00"
@.str.3 = [24 x i8] c"\0A%d is not a leap year\0A\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, 4
%7 = icmp eq i32 %6, 0
br i1 %7, label %8, label %15
8: ; preds = %0
%9 = load i32, i32* %2
%10 = srem i32 %9, 100
%11 = icmp ne i32 %10, 0
br i1 %11, label %12, label %15
12: ; preds = %8
%13 = load i32, i32* %2
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i32 %13)
br label %26
15: ; preds = %8, %0
%16 = load i32, i32* %2
%17 = srem i32 %16, 400
%18 = icmp eq 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
%23 = load i32, i32* %2
%24 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %23)
br label %25
25: ; preds = %22, %19
br label %26
26: ; preds = %25, %12
ret i32 0
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [20 x i8] c"\0A%d is a leap year\0A\00"
@.str.3 = [24 x i8] c"\0A%d is not a leap year\0A\00"
@str = [15 x i8] c"\0A Enter a year\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 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 = and i32 %5, 3
%7 = icmp ne i32 %6, 0
%8 = srem i32 %5, 100
%9 = icmp eq i32 %8, 0
%10 = or i1 %7, %9
br i1 %10, label %11, label %15
11: ; preds = %0
%12 = srem i32 %5, 400
%13 = icmp eq i32 %12, 0
%14 = select i1 %13, i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0)
br label %15
15: ; preds = %11, %0
%16 = phi i8* [ getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0), %0 ], [ %14, %11 ]
%17 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) %16, i32 %5)
ret i32 0
}