#include <iostream>
using namespace std;
 
inline bool my_strcmp1(const char* _s, const char* _d)
{   while(*_s || *_d)
    {   if(*_s++ != *_d++)  return true;
    }
    return false;
}
 
 
bool stringCompare(const char* s1, const char* s2) {
  for(;;) {
    if (*s1 != *s2) return false;
    if (*s1 == 0 || *s2 == 0) return true;
    ++s1; 
    ++s2;
  }
}
 
int _strcmp(const char* a, const char* b)
{
  int result = (a == nullptr)
               ? ((b == nullptr)
                 ? 0 : 1)
                 : ((b == nullptr)
                   ? -1: 2);
 
  if(result == 2)
  {
    while(*a != '\0' && *a++ == *b++){}
    --a;
    --b;
    result = ((*a == *b) ? 0 : ((*a < *b) ? -1 : 1));
  }
 
  return result;
}
 
int main() 
{
  // https://g...content-available-to-author-only...v.ru/flame/forum/?id=233418&page=7
  cout<<((my_strcmp1("Клапауций", "Жлапауций")) ? "true" : "false")<<endl;
  cout<<((my_strcmp1("Клапауций", "КлапауцийРукожоп")) ? "true" : "false")<<endl;
  cout<<((my_strcmp1("Клапауций!", "КлапауцийРукожоп")) ? "true" : "false")<<endl;
  cout<<((my_strcmp1("Клапауций", "Клапауций")) ? "true" : "false")<<endl;
  cout<<"------------------------------"<<endl;
  cout<<((stringCompare(nullptr, "ТарасРукожоп")) ? "true" : "false")<<endl;
  cout<<"------------------------------"<<endl;
  cout<<((_strcmp("Клапауций", "Жлапауций")==0) ? "true" : "false")<<endl;
  cout<<((_strcmp("Клапауций", "ЖлапауцийРукожоп")==0) ? "true" : "false")<<endl;
  cout<<((_strcmp("Клапауций!", "ЖлапауцийРукожоп")==0) ? "true" : "false")<<endl;
  cout<<((_strcmp("Клапауций", "Клапауций")==0) ? "true" : "false")<<endl;
 
 
  return 0;
}

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