#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 *);
int main(void) {
  int hh;
  int mm;
  ;
  printf("Enter a 24-hour time: ");
  scanf("%2d:%2d", &hh, &mm);
  if (hh > 12) {
    hh = hh - 12;
    printf("The time is: %2d:%2d PM\n", hh, mm);
  } else {
    printf("Equivalent 12-hour time: %2d:%2d AM\n", hh, mm);
  }
  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    0xed3(%rip),%rdi
lea    -0x8(%rbp),%rsi
lea    -0xc(%rbp),%rdx
call   1040 <scanf@plt>
cmpl   $0xc,-0x8(%rbp)
jle    117d <main+0x5d>
mov    -0x8(%rbp),%eax
sub    $0xc,%eax
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    1191 <main+0x71>
mov    -0x8(%rbp),%esi
mov    -0xc(%rbp),%edx
lea    0xeae(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
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    0xee1(%rip),%rdi
lea    0x4(%rsp),%rsi
mov    %rsp,%rdx
call   1040 <scanf@plt>
mov    0x4(%rsp),%esi
cmp    $0xd,%esi
jl     115f <main+0x3f>
add    $0xfffffff4,%esi
mov    %esi,0x4(%rsp)
mov    (%rsp),%edx
lea    0xec2(%rip),%rdi
jmp    1169 <main+0x49>
mov    (%rsp),%edx
lea    0xecf(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [23 x i8] c"Enter a 24-hour time: \00"
@.str.1 = [8 x i8] c"%2d:%2d\00"
@.str.2 = [25 x i8] c"The time is: %2d:%2d PM\0A\00"
@.str.3 = [37 x i8] c"Equivalent 12-hour time: %2d:%2d AM\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i32* %2, i32* %3)
%6 = load i32, i32* %2
%7 = icmp sgt i32 %6, 12
br i1 %7, label %8, label %14
8: ; preds = %0
%9 = load i32, i32* %2
%10 = sub nsw i32 %9, 12
store i32 %10, i32* %2
%11 = load i32, i32* %2
%12 = load i32, i32* %3
%13 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0), i32 %11, i32 %12)
br label %18
14: ; preds = %0
%15 = load i32, i32* %2
%16 = load i32, i32* %3
%17 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.3, i64 0, i64 0), i32 %15, i32 %16)
br label %18
18: ; preds = %14, %8
ret i32 0
}

LLVM IR (-O2):
@.str = [23 x i8] c"Enter a 24-hour time: \00"
@.str.1 = [8 x i8] c"%2d:%2d\00"
@.str.2 = [25 x i8] c"The time is: %2d:%2d PM\0A\00"
@.str.3 = [37 x i8] c"Equivalent 12-hour time: %2d:%2d AM\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
%4 = bitcast i32* %2 to i8*
%5 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @scanf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.1, i64 0, i64 0), i32* %1, i32* %2)
%7 = load i32, i32* %1
%8 = icmp sgt i32 %7, 12
br i1 %8, label %9, label %13
9: ; preds = %0
%10 = add nsw i32 %7, -12
store i32 %10, i32* %1
%11 = load i32, i32* %2
%12 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @.str.2, i64 0, i64 0), i32 %10, i32 %11)
br label %16
13: ; preds = %0
%14 = load i32, i32* %2
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([37 x i8], [37 x i8]* @.str.3, i64 0, i64 0), i32 %7, i32 %14)
br label %16
16: ; preds = %13, %9
ret i32 0
}