#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 *, char *);
int main() {
  char x;
  scanf("%c", &x);
  if ((x >= 'A') && (x <= 'Z'))
    printf("Capital Letter");
  else if ((x >= 'a') && (x <= 'z'))
    printf("Small letter");
  else if ((x >= 48) && (x <= 57))
    printf("Digit");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
lea    -0x5(%rbp),%rsi
call   1040 <scanf@plt>
movsbl -0x5(%rbp),%eax
cmp    $0x41,%eax
jl     116a <main+0x4a>
movsbl -0x5(%rbp),%eax
cmp    $0x5a,%eax
jg     116a <main+0x4a>
lea    0xea3(%rip),%rdi
call   1030 <printf@plt>
jmp    11c5 <main+0xa5>
movsbl -0x5(%rbp),%eax
cmp    $0x61,%eax
jl     1195 <main+0x75>
movsbl -0x5(%rbp),%eax
cmp    $0x7a,%eax
jg     1195 <main+0x75>
lea    0xe87(%rip),%rdi
call   1030 <printf@plt>
jmp    11c0 <main+0xa0>
movsbl -0x5(%rbp),%eax
cmp    $0x30,%eax
jl     11bb <main+0x9b>
movsbl -0x5(%rbp),%eax
cmp    $0x39,%eax
jg     11bb <main+0x9b>
lea    0xe69(%rip),%rdi
call   1030 <printf@plt>
jmp    11c0 <main+0xa0>
jmp    11c5 <main+0xa5>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xed8(%rip),%rdi
lea    0x7(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x7(%rsp),%al
lea    -0x41(%rax),%ecx
cmp    $0x1a,%cl
jae    1147 <main+0x27>
lea    0xebe(%rip),%rdi
jmp    1165 <main+0x45>
lea    -0x61(%rax),%ecx
cmp    $0x1a,%cl
jae    1158 <main+0x38>
lea    0xebc(%rip),%rdi
jmp    1165 <main+0x45>
add    $0xd0,%al
cmp    $0x9,%al
ja     116a <main+0x4a>
lea    0xeba(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%c\00"
@.str.1 = [15 x i8] c"Capital Letter\00"
@.str.2 = [13 x i8] c"Small letter\00"
@.str.3 = [6 x i8] c"Digit\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i8
store i32 0, i32* %1
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %2)
%4 = load i8, i8* %2
%5 = sext i8 %4 to i32
%6 = icmp sge i32 %5, 65
br i1 %6, label %7, label %13
7: ; preds = %0
%8 = load i8, i8* %2
%9 = sext i8 %8 to i32
%10 = icmp sle i32 %9, 90
br i1 %10, label %11, label %13
11: ; preds = %7
%12 = call i32 @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0))
br label %35
13: ; preds = %7, %0
%14 = load i8, i8* %2
%15 = sext i8 %14 to i32
%16 = icmp sge i32 %15, 97
br i1 %16, label %17, label %23
17: ; preds = %13
%18 = load i8, i8* %2
%19 = sext i8 %18 to i32
%20 = icmp sle i32 %19, 122
br i1 %20, label %21, label %23
21: ; preds = %17
%22 = call i32 @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0))
br label %34
23: ; preds = %17, %13
%24 = load i8, i8* %2
%25 = sext i8 %24 to i32
%26 = icmp sge i32 %25, 48
br i1 %26, label %27, label %33
27: ; preds = %23
%28 = load i8, i8* %2
%29 = sext i8 %28 to i32
%30 = icmp sle i32 %29, 57
br i1 %30, label %31, label %33
31: ; preds = %27
%32 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0))
br label %33
33: ; preds = %31, %27, %23
br label %34
34: ; preds = %33, %21
br label %35
35: ; preds = %34, %11
ret i32 0
}

LLVM IR (-O2):
@.str = [3 x i8] c"%c\00"
@.str.1 = [15 x i8] c"Capital Letter\00"
@.str.2 = [13 x i8] c"Small letter\00"
@.str.3 = [6 x i8] c"Digit\00"
define i32 @main() {
%1 = alloca i8
%2 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %1)
%3 = load i8, i8* %1
%4 = add i8 %3, -65
%5 = icmp ult i8 %4, 26
br i1 %5, label %12, label %6
6: ; preds = %0
%7 = add i8 %3, -97
%8 = icmp ult i8 %7, 26
br i1 %8, label %12, label %9
9: ; preds = %6
%10 = add i8 %3, -48
%11 = icmp ult i8 %10, 10
br i1 %11, label %12, label %15
12: ; preds = %9, %6, %0
%13 = phi i8* [ getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0), %0 ], [ getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0), %6 ], [ getelementptr inbounds ([6 x i8], [6 x i8]* @.str.3, i64 0, i64 0), %9 ]
%14 = call i32 @printf(i8* dereferenceable(1) %13)
br label %15
15: ; preds = %12, %9
ret i32 0
}