#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 n;
  do {
    scanf("%d", &n);
  } while (n < 0 || n > 9);
  switch (n) {
  case 0:
    printf("zero");
    break;
  case 1:
    printf("one");
    break;
  case 2:
    printf("two");
    break;
  case 3:
    printf("three");
    break;
  case 4:
    printf("four");
    break;
  case 5:
    printf("five");
    break;
  case 6:
    printf("six");
    break;
  case 7:
    printf("seven");
    break;
  case 8:
    printf("eight");
    break;
  case 9:
    printf("nine");
    break;
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xef2(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
mov    $0x1,%al
cmpl   $0x0,-0x8(%rbp)
mov    %al,-0x9(%rbp)
jl     1158 <main+0x38>
cmpl   $0x9,-0x8(%rbp)
setg   %al
mov    %al,-0x9(%rbp)
mov    -0x9(%rbp),%al
test   $0x1,%al
jne    112f <main+0xf>
mov    -0x8(%rbp),%eax
mov    %rax,-0x18(%rbp)
sub    $0x9,%rax
ja     122d <main+0x10d>
mov    -0x18(%rbp),%rax
lea    0xe81(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xe9c(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe90(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe83(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe76(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe6b(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe5f(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe53(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe46(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe3b(%rip),%rdi
call   1030 <printf@plt>
jmp    122d <main+0x10d>
lea    0xe30(%rip),%rdi
call   1030 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xed5(%rip),%r14
lea    0x4(%rsp),%rbx
mov    %r14,%rdi
mov    %rbx,%rsi
call   1040 <scanf@plt>
movslq 0x4(%rsp),%rax
cmp    $0x9,%rax
ja     1130 <main+0x10>
lea    0xeeb(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [3 x i8] c"%d\00"
@.str.1 = [5 x i8] c"zero\00"
@.str.2 = [4 x i8] c"one\00"
@.str.3 = [4 x i8] c"two\00"
@.str.4 = [6 x i8] c"three\00"
@.str.5 = [5 x i8] c"four\00"
@.str.6 = [5 x i8] c"five\00"
@.str.7 = [4 x i8] c"six\00"
@.str.8 = [6 x i8] c"seven\00"
@.str.9 = [6 x i8] c"eight\00"
@.str.10 = [5 x i8] c"nine\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
br label %3
3: ; preds = %11, %0
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
br label %5
5: ; preds = %3
%6 = load i32, i32* %2
%7 = icmp slt i32 %6, 0
br i1 %7, label %11, label %8
8: ; preds = %5
%9 = load i32, i32* %2
%10 = icmp sgt i32 %9, 9
br label %11
11: ; preds = %8, %5
%12 = phi i1 [ true, %5 ], [ %10, %8 ]
br i1 %12, label %3, label %13
13: ; preds = %11
%14 = load i32, i32* %2
switch i32 %14, label %35 [
i32 0, label %15
i32 1, label %17
i32 2, label %19
i32 3, label %21
i32 4, label %23
i32 5, label %25
i32 6, label %27
i32 7, label %29
i32 8, label %31
i32 9, label %33
]
15: ; preds = %13
%16 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
br label %35
17: ; preds = %13
%18 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0))
br label %35
19: ; preds = %13
%20 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0))
br label %35
21: ; preds = %13
%22 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.4, i64 0, i64 0))
br label %35
23: ; preds = %13
%24 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.5, i64 0, i64 0))
br label %35
25: ; preds = %13
%26 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.6, i64 0, i64 0))
br label %35
27: ; preds = %13
%28 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.7, i64 0, i64 0))
br label %35
29: ; preds = %13
%30 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.8, i64 0, i64 0))
br label %35
31: ; preds = %13
%32 = call i32 @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.9, i64 0, i64 0))
br label %35
33: ; preds = %13
%34 = call i32 @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.10, i64 0, i64 0))
br label %35
35: ; preds = %13, %33, %31, %29, %27, %25, %23, %21, %19, %17, %15
%36 = load i32, i32* %1
ret i32 %36
}

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [5 x i8] c"zero\00"
@.str.2 = [4 x i8] c"one\00"
@.str.3 = [4 x i8] c"two\00"
@.str.4 = [6 x i8] c"three\00"
@.str.5 = [5 x i8] c"four\00"
@.str.6 = [5 x i8] c"five\00"
@.str.7 = [4 x i8] c"six\00"
@.str.8 = [6 x i8] c"seven\00"
@.str.9 = [6 x i8] c"eight\00"
@.str.10 = [5 x i8] c"nine\00"
@reltable.main = [10 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.1 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.2 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.3 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.4 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.5 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.6 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([4 x i8]* @.str.7 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.8 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([6 x i8]* @.str.9 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([5 x i8]* @.str.10 to i64), i64 ptrtoint ([10 x i32]* @reltable.main to i64)) to i32)]
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
br label %3
3: ; preds = %3, %0
%4 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%5 = load i32, i32* %1
%6 = icmp ugt i32 %5, 9
br i1 %6, label %3, label %7
7: ; preds = %3
%8 = sext i32 %5 to i64
%9 = shl i64 %8, 2
%10 = call i8* @llvm.load.relative.i64(i8* bitcast ([10 x i32]* @reltable.main to i8*), i64 %9)
%11 = call i32 @printf(i8* dereferenceable(1) %10)
ret i32 0
}