bool String::containsStr(const String& substr) const
{
	if (strlen(substr.str) > strlen(this->str))
	{
		return false;
	}

	for (int i = 0; i < strlen(this->str); i++)
	{
		if (this->str[i] == substr.str[0] && strlen(substr.str) == 1)
		{
			return true;
		}

		if (this->str[i] == substr.str[0] && strlen(substr.str) > 1)
		{
			for (int j = 1; j < strlen(substr.str); j++)
			{
				if (this->str[i+j] != substr.str[j])
				{
					break;
				}
				return true;
			}
		}
	}
	return false;
}

void String::operator-(const String& other)
{
	if (this->containsStr(other))
	{
		char* smallerBuffer = new char[strlen(this->str) - strlen(other.str) + 1];
		int index = getIndexSubString(this->str, other.str);
		int nextindexStr = index + strlen(other.str);
		int nextindex = 0;

		for (int i = 0; i < index; i++)
		{
			smallerBuffer[i] = this->str[i];
			nextindex = i + 1;
		}
		int subtractor = strlen(this->str) - nextindexStr;

		for (int i = 0; i < subtractor; i++)
		{
			smallerBuffer[nextindex] = this->str[nextindexStr];
			nextindex++;
			nextindexStr++;
		}

		smallerBuffer[strlen(this->str) - strlen(other.str)] = '\0';
		this->erase();
		this->str = smallerBuffer;
	}
	else
	{
		std::cout << other.str << " is not a substring of " << this->str;
	}

}