#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 *);
main() {
  int year;
  printf("\nEnter a year to find out if it is a leap year or not\n");
  scanf("%d", &year);
  if (year % 400 == 0) {
    printf("\nLeap year");
  } else if (year % 100 == 0) {
    printf("\nNot a Leap year");
  } else if (year % 4 == 0) {
    printf("\nLeap year");
  } else {
    printf("\nNot a Leap year");
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
call   1030 <printf@plt>
lea    0xef5(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x8(%rbp),%eax
mov    $0x190,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1170 <main+0x50>
lea    0xed4(%rip),%rdi
call   1030 <printf@plt>
jmp    11d0 <main+0xb0>
mov    -0x8(%rbp),%eax
mov    $0x64,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    1195 <main+0x75>
lea    0xeba(%rip),%rdi
call   1030 <printf@plt>
jmp    11cb <main+0xab>
mov    -0x8(%rbp),%eax
mov    $0x4,%ecx
cltd
idiv   %ecx
cmp    $0x0,%edx
jne    11ba <main+0x9a>
lea    0xe8a(%rip),%rdi
call   1030 <printf@plt>
jmp    11c6 <main+0xa6>
lea    0xe84(%rip),%rdi
call   1030 <printf@plt>
jmp    11cb <main+0xab>
jmp    11d0 <main+0xb0>
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xee7(%rip),%rdi
call   1030 <puts@plt>
lea    0xebc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
imul   $0xc28f5c29,%eax,%ecx
add    $0x51eb850,%ecx
mov    %ecx,%edx
ror    $0x4,%edx
cmp    $0xa3d70b,%edx
jb     118c <main+0x5c>
ror    $0x2,%ecx
cmp    $0x28f5c29,%ecx
jb     1195 <main+0x65>
test   $0x3,%al
lea    0xe84(%rip),%rax
lea    0xe88(%rip),%rdi
cmove  %rax,%rdi
jmp    119c <main+0x6c>
lea    0xe70(%rip),%rdi
jmp    119c <main+0x6c>
lea    0xe72(%rip),%rdi
call   1040 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [55 x i8] c"\0AEnter a year to find out if it is a leap year or not\0A\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [11 x i8] c"\0ALeap year\00"
@.str.3 = [17 x i8] c"\0ANot a Leap year\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 @printf(i8* getelementptr inbounds ([55 x i8], [55 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 %10
8: ; preds = %0
%9 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0))
br label %26
10: ; preds = %0
%11 = load i32, i32* %2
%12 = srem i32 %11, 100
%13 = icmp eq i32 %12, 0
br i1 %13, label %14, label %16
14: ; preds = %10
%15 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.3, i64 0, i64 0))
br label %25
16: ; preds = %10
%17 = load i32, i32* %2
%18 = srem i32 %17, 4
%19 = icmp eq i32 %18, 0
br i1 %19, label %20, label %22
20: ; preds = %16
%21 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0))
br label %24
22: ; preds = %16
%23 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.3, i64 0, i64 0))
br label %24
24: ; preds = %22, %20
br label %25
25: ; preds = %24, %14
br label %26
26: ; preds = %25, %8
%27 = load i32, i32* %1
ret i32 %27
}

LLVM IR (-O2):
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [11 x i8] c"\0ALeap year\00"
@.str.3 = [17 x i8] c"\0ANot a Leap year\00"
@str = [54 x i8] c"\0AEnter a year to find out if it is a leap year or not\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([54 x i8], [54 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 = srem i32 %5, 100
%10 = icmp eq i32 %9, 0
br i1 %10, label %15, label %11
11: ; preds = %8
%12 = and i32 %5, 3
%13 = icmp eq i32 %12, 0
%14 = select i1 %13, i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.3, i64 0, i64 0)
br label %15
15: ; preds = %11, %8, %0
%16 = phi i8* [ getelementptr inbounds ([11 x i8], [11 x i8]* @.str.2, i64 0, i64 0), %0 ], [ getelementptr inbounds ([17 x i8], [17 x i8]* @.str.3, i64 0, i64 0), %8 ], [ %14, %11 ]
%17 = call i32 @printf(i8* dereferenceable(1) %16)
ret i32 0
}