#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 fibonacci(int);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int userInput = 0, fibonacciNumber = 0;
  printf("Please enter a Fibonacci member:");
  scanf("%d", &userInput);
  if (userInput < 0) {
    printf("Error: Input positive number\n");
  } else if (userInput == 0) {
    printf("Error: Input larger number than 0\n");
  } else {
    printf("%d\n", fibonacci(userInput));
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
lea    0xeac(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xebf(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1050 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
jge    1188 <main+0x58>
lea    0xea8(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11c2 <main+0x92>
cmpl   $0x0,-0x8(%rbp)
jne    11a5 <main+0x75>
lea    0xea9(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11bd <main+0x8d>
mov    -0x8(%rbp),%edi
call   1040 <fibonacci@plt>
mov    %eax,%esi
lea    0xeaf(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
jmp    11c2 <main+0x92>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
movl   $0x0,0x4(%rsp)
lea    0xeb0(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xec3(%rip),%rdi
lea    0x4(%rsp),%rsi
call   1060 <scanf@plt>
mov    0x4(%rsp),%edi
test   %edi,%edi
js     1189 <main+0x49>
je     1192 <main+0x52>
call   1050 <fibonacci@plt>
lea    0xea6(%rip),%rdi
mov    %eax,%esi
xor    %eax,%eax
call   1040 <printf@plt>
jmp    119e <main+0x5e>
lea    0xeba(%rip),%rdi
jmp    1199 <main+0x59>
lea    0xe8f(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [33 x i8] c"Please enter a Fibonacci member:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [30 x i8] c"Error: Input positive number\0A\00"
@.str.3 = [35 x i8] c"Error: Input larger number than 0\0A\00"
@.str.4 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
store i32 0, i32* %1
store i32 0, i32* %2
store i32 0, i32* %3
%4 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([33 x i8], [33 x i8]* @.str, i64 0, i64 0))
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%6 = load i32, i32* %2
%7 = icmp slt i32 %6, 0
br i1 %7, label %8, label %10
8: ; preds = %0
%9 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.2, i64 0, i64 0))
br label %20
10: ; preds = %0
%11 = load i32, i32* %2
%12 = icmp eq i32 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %10
%14 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.3, i64 0, i64 0))
br label %19
15: ; preds = %10
%16 = load i32, i32* %2
%17 = call i32 @fibonacci(i32 %16)
%18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32 %17)
br label %19
19: ; preds = %15, %13
br label %20
20: ; preds = %19, %8
ret i32 0
}

LLVM IR (-O2):
@.str = [33 x i8] c"Please enter a Fibonacci member:\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.4 = [4 x i8] c"%d\0A\00"
@str = [34 x i8] c"Error: Input larger number than 0\00"
@str.5 = [29 x i8] c"Error: Input positive number\00"
define i32 @main() {
%1 = alloca i32
%2 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([33 x i8], [33 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 = icmp slt i32 %5, 0
br i1 %6, label %7, label %9
7: ; preds = %0
%8 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([29 x i8], [29 x i8]* @str.5, i64 0, i64 0))
br label %16
9: ; preds = %0
%10 = icmp eq i32 %5, 0
br i1 %10, label %11, label %13
11: ; preds = %9
%12 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([34 x i8], [34 x i8]* @str, i64 0, i64 0))
br label %16
13: ; preds = %9
%14 = call i32 @fibonacci(i32 %5)
%15 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.4, i64 0, i64 0), i32 %14)
br label %16
16: ; preds = %11, %13, %7
ret i32 0
}