#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*/ fgets(char *, int, int /*<<< orphan*/);
char *find(char *, char);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, char *);
int /*<<< orphan*/ stdin;
int main() {
  char haystack[400];
  char needle;
  char *ptr;
  fgets(haystack, 400, stdin);
  scanf("%c", &needle);
  ptr = find(haystack, needle);
  if (ptr != NULL) {
    printf("%ld", ptr - haystack);
  } else {
    printf("-1");
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x1b0,%rsp
movl   $0x0,-0x4(%rbp)
lea    -0x1a0(%rbp),%rdi
mov    0x2e88(%rip),%rax
mov    (%rax),%edx
mov    $0x190,%esi
call   1040 <fgets@plt>
lea    0xe8d(%rip),%rdi
lea    -0x1a1(%rbp),%rsi
call   1060 <scanf@plt>
lea    -0x1a0(%rbp),%rdi
movsbl -0x1a1(%rbp),%esi
call   1050 <find@plt>
mov    %rax,-0x1b0(%rbp)
cmpq   $0x0,-0x1b0(%rbp)
je     11cb <main+0x8b>
mov    -0x1b0(%rbp),%rsi
lea    -0x1a0(%rbp),%rax
sub    %rax,%rsi
lea    0xe44(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11d9 <main+0x99>
lea    0xe35(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x1b0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x1a0,%rsp
mov    0x2e99(%rip),%rax
mov    (%rax),%edx
lea    0x10(%rsp),%rbx
mov    %rbx,%rdi
mov    $0x190,%esi
call   1040 <fgets@plt>
lea    0xe96(%rip),%rdi
lea    0xf(%rsp),%rsi
call   1060 <scanf@plt>
movsbl 0xf(%rsp),%esi
mov    %rbx,%rdi
call   1050 <find@plt>
test   %rax,%rax
je     119c <main+0x5c>
sub    %rbx,%rax
lea    0xe73(%rip),%rdi
mov    %rax,%rsi
xor    %eax,%eax
call   1030 <printf@plt>
jmp    11aa <main+0x6a>
lea    0xe64(%rip),%rdi
xor    %eax,%eax
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x1a0,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@stdin = global i32 0
@.str = [3 x i8] c"%c\00"
@.str.1 = [4 x i8] c"%ld\00"
@.str.2 = [3 x i8] c"-1\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [400 x i8]
%3 = alloca i8
%4 = alloca i8*
store i32 0, i32* %1
%5 = getelementptr inbounds [400 x i8], [400 x i8]* %2, i64 0, i64 0
%6 = load i32, i32* @stdin
%7 = call i32 @fgets(i8* %5, i32 400, i32 %6)
%8 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %3)
%9 = getelementptr inbounds [400 x i8], [400 x i8]* %2, i64 0, i64 0
%10 = load i8, i8* %3
%11 = call i8* @find(i8* %9, i8 signext %10)
store i8* %11, i8** %4
%12 = load i8*, i8** %4
%13 = icmp ne i8* %12, null
br i1 %13, label %14, label %21
14: ; preds = %0
%15 = load i8*, i8** %4
%16 = getelementptr inbounds [400 x i8], [400 x i8]* %2, i64 0, i64 0
%17 = ptrtoint i8* %15 to i64
%18 = ptrtoint i8* %16 to i64
%19 = sub i64 %17, %18
%20 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i64 %19)
br label %23
21: ; preds = %0
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %23
23: ; preds = %21, %14
ret i32 0
}

LLVM IR (-O2):
@stdin = global i32 0
@.str = [3 x i8] c"%c\00"
@.str.1 = [4 x i8] c"%ld\00"
@.str.2 = [3 x i8] c"-1\00"
define i32 @main() {
%1 = alloca [400 x i8]
%2 = alloca i8
%3 = getelementptr inbounds [400 x i8], [400 x i8]* %1, i64 0, i64 0
%4 = load i32, i32* @stdin
%5 = call i32 @fgets(i8* %3, i32 400, i32 %4)
%6 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i8* %2)
%7 = load i8, i8* %2
%8 = call i8* @find(i8* %3, i8 signext %7)
%9 = icmp eq i8* %8, null
br i1 %9, label %15, label %10
10: ; preds = %0
%11 = ptrtoint i8* %8 to i64
%12 = ptrtoint [400 x i8]* %1 to i64
%13 = sub i64 %11, %12
%14 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i64 %13)
br label %17
15: ; preds = %0
%16 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
br label %17
17: ; preds = %15, %10
ret i32 0
}