#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 atoi(char *);
int /*<<< orphan*/ fac0(int);
int /*<<< orphan*/ fac1(int);
int /*<<< orphan*/ fac2(int);
char getchar();
int /*<<< orphan*/ printf(char *, ...);
int main(void) {
  int x, i;
  char a[25];
  printf("getal: ");
  for (i = 0; (a[i] = getchar()) != '\n'; i++)
    ;
  a[i] = '\0';
  x = atoi(a);
  printf("faculteit van %d: %ld\n", x, fac0(x));
  printf("faculteit van %d: %ld\n", x, fac1(x));
  printf("faculteit van %d: %ld\n", x, fac2(x));
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe8a(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
movl   $0x0,-0xc(%rbp)
mov    $0x0,%al
call   1050 <getchar@plt>
movslq -0xc(%rbp),%rcx
mov    %al,-0x30(%rbp,%rcx,1)
movsbl %al,%eax
cmp    $0xa,%eax
je     11b2 <main+0x52>
jmp    11a4 <main+0x44>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    1184 <main+0x24>
movslq -0xc(%rbp),%rax
movb   $0x0,-0x30(%rbp,%rax,1)
lea    -0x30(%rbp),%rdi
call   1080 <atoi@plt>
mov    %eax,-0x8(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,-0x3c(%rbp)
mov    -0x8(%rbp),%edi
call   1060 <fac0@plt>
mov    -0x3c(%rbp),%esi
mov    %eax,%edx
lea    0xe27(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0x38(%rbp)
mov    -0x8(%rbp),%edi
call   1030 <fac1@plt>
mov    -0x38(%rbp),%esi
mov    %eax,%edx
lea    0xe06(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x8(%rbp),%eax
mov    %eax,-0x34(%rbp)
mov    -0x8(%rbp),%edi
call   1070 <fac2@plt>
mov    -0x34(%rbp),%esi
mov    %eax,%edx
lea    0xde5(%rip),%rdi
mov    $0x0,%al
call   1040 <printf@plt>
mov    -0x4(%rbp),%eax
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x28,%rsp
lea    0xe92(%rip),%rdi
xor    %eax,%eax
call   1040 <printf@plt>
mov    $0xffffffffffffffff,%rbx
nopl   0x0(%rax)
xor    %eax,%eax
call   1050 <getchar@plt>
mov    %al,0x1(%rsp,%rbx,1)
add    $0x1,%rbx
cmp    $0xa,%al
jne    1180 <main+0x20>
mov    %ebx,%eax
movb   $0x0,(%rsp,%rax,1)
mov    %rsp,%rdi
call   1080 <atoi@plt>
mov    %eax,%ebx
mov    %eax,%edi
call   1060 <fac0@plt>
lea    0xe57(%rip),%r14
mov    %r14,%rdi
mov    %ebx,%esi
mov    %eax,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %ebx,%edi
call   1030 <fac1@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    %eax,%edx
xor    %eax,%eax
call   1040 <printf@plt>
mov    %ebx,%edi
call   1070 <fac2@plt>
mov    %r14,%rdi
mov    %ebx,%esi
mov    %eax,%edx
xor    %eax,%eax
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x28,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [8 x i8] c"getal: \00"
@.str.1 = [23 x i8] c"faculteit van %d: %ld\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca [25 x i8]
store i32 0, i32* %1
%5 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
store i32 0, i32* %3
br label %6
6: ; preds = %14, %0
%7 = call signext i8 (...) @getchar()
%8 = load i32, i32* %3
%9 = sext i32 %8 to i64
%10 = getelementptr inbounds [25 x i8], [25 x i8]* %4, i64 0, i64 %9
store i8 %7, i8* %10
%11 = sext i8 %7 to i32
%12 = icmp ne i32 %11, 10
br i1 %12, label %13, label %17
13: ; preds = %6
br label %14
14: ; preds = %13
%15 = load i32, i32* %3
%16 = add nsw i32 %15, 1
store i32 %16, i32* %3
br label %6
17: ; preds = %6
%18 = load i32, i32* %3
%19 = sext i32 %18 to i64
%20 = getelementptr inbounds [25 x i8], [25 x i8]* %4, i64 0, i64 %19
store i8 0, i8* %20
%21 = getelementptr inbounds [25 x i8], [25 x i8]* %4, i64 0, i64 0
%22 = call i32 @atoi(i8* %21)
store i32 %22, i32* %2
%23 = load i32, i32* %2
%24 = load i32, i32* %2
%25 = call i32 @fac0(i32 %24)
%26 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %23, i32 %25)
%27 = load i32, i32* %2
%28 = load i32, i32* %2
%29 = call i32 @fac1(i32 %28)
%30 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %27, i32 %29)
%31 = load i32, i32* %2
%32 = load i32, i32* %2
%33 = call i32 @fac2(i32 %32)
%34 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %31, i32 %33)
%35 = load i32, i32* %1
ret i32 %35
}

LLVM IR (-O2):
@.str = [8 x i8] c"getal: \00"
@.str.1 = [23 x i8] c"faculteit van %d: %ld\0A\00"
define i32 @main() {
%1 = alloca [25 x i8]
%2 = getelementptr inbounds [25 x i8], [25 x i8]* %1, i64 0, i64 0
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([8 x i8], [8 x i8]* @.str, i64 0, i64 0))
br label %4
4: ; preds = %4, %0
%5 = phi i64 [ %9, %4 ], [ 0, %0 ]
%6 = tail call signext i8 (...) @getchar()
%7 = getelementptr inbounds [25 x i8], [25 x i8]* %1, i64 0, i64 %5
store i8 %6, i8* %7
%8 = icmp eq i8 %6, 10
%9 = add nuw i64 %5, 1
br i1 %8, label %10, label %4
10: ; preds = %4
%11 = and i64 %5, 4294967295
%12 = getelementptr inbounds [25 x i8], [25 x i8]* %1, i64 0, i64 %11
store i8 0, i8* %12
%13 = call i32 @atoi(i8* %2)
%14 = tail call i32 @fac0(i32 %13)
%15 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %13, i32 %14)
%16 = tail call i32 @fac1(i32 %13)
%17 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %13, i32 %16)
%18 = tail call i32 @fac2(i32 %13)
%19 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([23 x i8], [23 x i8]* @.str.1, i64 0, i64 0), i32 %13, i32 %18)
ret i32 0
}