#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 */
typedef int /*<<< orphan*/ url;

/* Variables and functions */
int /*<<< orphan*/ exPosByDot(char *);
int /*<<< orphan*/ fgets(char *, int, int /*<<< orphan*/);
int /*<<< orphan*/ puts(char *);
int /*<<< orphan*/ stdin;
int strlen(char *);
int main(void) {
  char url[100];
  puts("Enter a url: ");
  fgets(url, sizeof(url), stdin);
  url[strlen(url) - 1] = 0;
  exPosByDot(url);
  puts("The result: ");
  puts(url);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x70,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeaa(%rip),%rdi
call   1030 <puts@plt>
lea    -0x70(%rbp),%rdi
mov    0x2e82(%rip),%rax
mov    (%rax),%edx
mov    $0x64,%esi
call   1060 <fgets@plt>
lea    -0x70(%rbp),%rdi
call   1050 <strlen@plt>
sub    $0x1,%eax
cltq
movb   $0x0,-0x70(%rbp,%rax,1)
lea    -0x70(%rbp),%rdi
call   1040 <exPosByDot@plt>
lea    0xe79(%rip),%rdi
call   1030 <puts@plt>
lea    -0x70(%rbp),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x70,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x70,%rsp
lea    0xeb4(%rip),%rdi
call   1030 <puts@plt>
mov    0x2e90(%rip),%rax
mov    (%rax),%edx
mov    %rsp,%rbx
mov    %rbx,%rdi
mov    $0x64,%esi
call   1060 <fgets@plt>
mov    %rbx,%rdi
call   1050 <strlen@plt>
cltq
movb   $0x0,-0x1(%rax,%rbx,1)
mov    %rbx,%rdi
call   1040 <exPosByDot@plt>
lea    0xe86(%rip),%rdi
call   1030 <puts@plt>
mov    %rbx,%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x70,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [14 x i8] c"Enter a url: \00"
@stdin = global i32 0
@.str.1 = [13 x i8] c"The result: \00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [100 x i8]
store i32 0, i32* %1
%3 = call i32 @puts(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%4 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%5 = load i32, i32* @stdin
%6 = call i32 @fgets(i8* %4, i32 100, i32 %5)
%7 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%8 = call i32 @strlen(i8* %7)
%9 = sub nsw i32 %8, 1
%10 = sext i32 %9 to i64
%11 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 %10
store i8 0, i8* %11
%12 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%13 = call i32 @exPosByDot(i8* %12)
%14 = call i32 @puts(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0))
%15 = getelementptr inbounds [100 x i8], [100 x i8]* %2, i64 0, i64 0
%16 = call i32 @puts(i8* %15)
ret i32 0
}

LLVM IR (-O2):
@.str = [14 x i8] c"Enter a url: \00"
@stdin = global i32 0
@.str.1 = [13 x i8] c"The result: \00"
define i32 @main() {
%1 = alloca [100 x i8]
%2 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 0
%3 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([14 x i8], [14 x i8]* @.str, i64 0, i64 0))
%4 = load i32, i32* @stdin
%5 = call i32 @fgets(i8* %2, i32 100, i32 %4)
%6 = call i32 @strlen(i8* %2)
%7 = add nsw i32 %6, -1
%8 = sext i32 %7 to i64
%9 = getelementptr inbounds [100 x i8], [100 x i8]* %1, i64 0, i64 %8
store i8 0, i8* %9
%10 = call i32 @exPosByDot(i8* %2)
%11 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @.str.1, i64 0, i64 0))
%12 = call i32 @puts(i8* %2)
ret i32 0
}