my_lab.cpp

#include <stdio.h> 
#include "my_lab.h" 

HugeInt::HugeInt()
{
	for (int i = 39; i >= 0; i--)
	{
		num[i] = 0;
	}
	size = 0;
}

HugeInt::HugeInt(HugeInt& h)
{
	size = h.size;
	for (int i = 0; i < 40; i++)
	{
		num[i] = h.num[i];
	}

}

HugeInt::HugeInt(short razr, char str[], bool znak)
{
	
	size = razr;
	short iter = size;
	for (int i = 39; i >= 0; i--)
	{
		if (iter > 0)
		{
			num[i] = str[--iter] - '0';
		}
		else
		{
			num[i] = 0;
		}
	}
};

HugeInt::~HugeInt() {
	printf_s("%s","Hello");
}

HugeInt& HugeInt::operator +(HugeInt& h)
{
	HugeInt temp;
	short pere = 0;
	if (sign == h.sign) {
		for (int i = 39; i >= 0; i--)
		{
			num[i] += h.num[i] + pere;

			if (num[i] > 9)
			{
				pere = 1;
				num[i] = num[i] % 10;
			}
			else
			{
				pere = 0;
			}
		}
	}
	else
	{
		if (h.sign == 1) {
			this->operator-(h);
		}
		else
		{
			h.operator-(*this);
		}

	}
	return *this;
}

HugeInt& HugeInt::operator -(HugeInt& h)
{
	HugeInt temp;
	short g = 0;
	for (int i = 39; i >= 0; i--)
	{
		if (num[i] >= h.num[i])
		{
			num[i] -= h.num[i];
		}
		else
		{
			if (num[i - 1] > 0)
			{
				num[i - 1]--;
				num[i] = num[i] - h.num[i] + 10;
			}
			else
			{
				g = i;
				while (num[g] == 0 && num[g - 1] > 0)
				{
					num[g] = 9;
					g--;
				}
				num[g]--;
			}
		}
	}
	return *this;
}

HugeInt& HugeInt::operator =(HugeInt& h)
{
	if (this != &h)
	{
		size = h.size;
		for (int g = 0; g < 40; g++)
		{
			num[g] = h.num[g];
		}
	}
	return *this;
}

bool HugeInt::operator >(HugeInt& h)
{
	if (size != h.size)
	{
		if (size > h.size)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	else
	{
		int i = 40 - size;
		while (num[i] == h.num[i] && i < 40)
		{
			i++;
		}
		if (num[i] > h.num[i] && i != 40)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	return true;
}

bool HugeInt::operator <(HugeInt& h)
{
	if (!(*this > h) && !(*this == h))
	{
		return true;
	}
	return false;
}

bool HugeInt::operator ==(HugeInt& h)
{
	if (size == h.size)
	{
		int i = 40 - size;
		while (num[i] == h.num[i] && i < 40)
		{
			i++;
		}
		if (i == 40 || num[i] == h.num[i])
		{
			return true;
		}
	}
	return false;
}

bool HugeInt::operator !=(HugeInt& h)
{
	if (size == h.size)
	{
		int i = 40 - size;
		while (num[i] == h.num[i] && i < 40)
		{
			i++;
		}
		if (i == 40 || num[i] == h.num[i])
		{
			return false;
		}
	}
	return true;
}

void HugeInt::print()
{
	printf_s("size = %d\n", size);
	int g = 0;
	while (num[g] == 0 && num[g + 1] == 0)
	{
		g++;
	}
	g++;
	printf_s("num = ");
	for (g; g < 40; g++)
	{
		printf_s("%d", num[g]);
	}
}

void HugeInt::read(FILE* file)
{
	char s[40];
	fgets(s, 40, file);
	HugeInt a( (s[strlen(s)-1] =='\n') ? strlen(s) - 1 : strlen(s), s);
	*this = a;
}

short* HugeInt::getNum()
{
	return num;
}

short HugeInt::getSize()
{
	return size;
}

bool HugeInt::getSign()
{
	return sign;
}

void HugeInt::setNum(short razr, char str[], bool znak)
{
	//HugeInt a(razr, str, znak);
	//*this = a;
	sign = znak;
	size = razr;
	short iter = size;
	for (int i = 39; i >= 0; i--)
	{
		if (iter > 0)
		{
			num[i] = str[--iter] - '0';
		}
		else
		{
			num[i] = 0;
		}
	}
}

void HugeInt::setSign(bool znak)
{
	sign = znak;
}