#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 *);
void main() {
  int a;
  printf("Input a number:");
  scanf("%d", &a);
  switch (a) {
  case 1:
    printf("Monday\n");
    break;
  case 2:
    printf("Thuesday\n");
    break;
  case 3:
    printf("Wednesday\n");
    break;
  case 4:
    printf("Thusday\n");
    break;
  case 5:
    printf("Friday\n");
    break;
  case 6:
    printf("Saturday\n");
    break;
  case 7:
    printf("Sunday\n");
    break;
  default:
    printf("Error\n");
    break;
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
lea    0xeed(%rip),%rdi
call   1030 <printf@plt>
lea    0xef1(%rip),%rdi
lea    -0x4(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x4(%rbp),%eax
add    $0xffffffff,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x6,%eax
ja     11e4 <main+0xc4>
mov    -0x10(%rbp),%rax
lea    0xe9c(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xebb(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xeb2(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xeab(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xea5(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xe9d(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xe94(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xe8d(%rip),%rdi
call   1030 <printf@plt>
jmp    11f0 <main+0xd0>
lea    0xe84(%rip),%rdi
call   1030 <printf@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
lea    0xec8(%rip),%rdi
call   1040 <printf@plt>
lea    0xecc(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1050 <scanf@plt>
mov    0x4(%rsp),%eax
add    $0xffffffff,%eax
cmp    $0x6,%eax
ja     116c <main+0x3c>
cltq
lea    0xef1(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1173 <main+0x43>
lea    0xed9(%rip),%rdi
call   1030 <puts@plt>
pop    %rax
ret

LLVM IR (-O0):
@.str = [16 x i8] c"Input a number:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [8 x i8] c"Monday\0A\00"
@.str.3 = [10 x i8] c"Thuesday\0A\00"
@.str.4 = [11 x i8] c"Wednesday\0A\00"
@.str.5 = [9 x i8] c"Thusday\0A\00"
@.str.6 = [8 x i8] c"Friday\0A\00"
@.str.7 = [10 x i8] c"Saturday\0A\00"
@.str.8 = [8 x i8] c"Sunday\0A\00"
@.str.9 = [7 x i8] c"Error\0A\00"
define void @main() {
%1 = alloca i32
%2 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%4 = load i32, i32* %1
switch i32 %4, label %19 [
i32 1, label %5
i32 2, label %7
i32 3, label %9
i32 4, label %11
i32 5, label %13
i32 6, label %15
i32 7, label %17
]
5: ; preds = %0
%6 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.2, i64 0, i64 0))
br label %21
7: ; preds = %0
%8 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.3, i64 0, i64 0))
br label %21
9: ; preds = %0
%10 = call i32 @printf(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str.4, i64 0, i64 0))
br label %21
11: ; preds = %0
%12 = call i32 @printf(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.5, i64 0, i64 0))
br label %21
13: ; preds = %0
%14 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.6, i64 0, i64 0))
br label %21
15: ; preds = %0
%16 = call i32 @printf(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.7, i64 0, i64 0))
br label %21
17: ; preds = %0
%18 = call i32 @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.8, i64 0, i64 0))
br label %21
19: ; preds = %0
%20 = call i32 @printf(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.9, i64 0, i64 0))
br label %21
21: ; preds = %19, %17, %15, %13, %11, %9, %7, %5
ret void
}

LLVM IR (-O2):
@.str = [16 x i8] c"Input a number:\00"
@.str.1 = [3 x i8] c"%d\00"
@str = [7 x i8] c"Sunday\00"
@str.10 = [9 x i8] c"Saturday\00"
@str.11 = [7 x i8] c"Friday\00"
@str.12 = [8 x i8] c"Thusday\00"
@str.13 = [10 x i8] c"Wednesday\00"
@str.14 = [9 x i8] c"Thuesday\00"
@str.15 = [7 x i8] c"Monday\00"
@str.16 = [6 x i8] c"Error\00"
@reltable.main = [7 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @str.15 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str.14 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([10 x i8]* @str.13 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([8 x i8]* @str.12 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @str.11 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([9 x i8]* @str.10 to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([7 x i8]* @str to i64), i64 ptrtoint ([7 x i32]* @reltable.main to i64)) to i32)]
define void @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
%3 = tail call i32 @printf(i8* dereferenceable(1) 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* %1)
%5 = load i32, i32* %1
%6 = add i32 %5, -1
%7 = icmp ult i32 %6, 7
br i1 %7, label %8, label %12
8: ; preds = %0
%9 = sext i32 %6 to i64
%10 = shl i64 %9, 2
%11 = call i8* @llvm.load.relative.i64(i8* bitcast ([7 x i32]* @reltable.main to i8*), i64 %10)
br label %12
12: ; preds = %0, %8
%13 = phi i8* [ %11, %8 ], [ getelementptr inbounds ([6 x i8], [6 x i8]* @str.16, i64 0, i64 0), %0 ]
%14 = call i32 @puts(i8* dereferenceable(1) %13)
ret void
}