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#include <iostream>
using namespace std;
#include "HugeInteger.h"
HugeInteger::HugeInteger()
{
op1[MAX] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
op2[MAX] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
result[MAX] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
//for (int i = 0; i <= MAX2; i++)
//{
// op1[i] = 0;
//}
}
//HugeInteger HugeInteger::operator+(const HugeInteger& c) const
//{
// HugeInteger Result;
// Result.op1 = Result.add(this>op1, c.op2, c.result);
// return Result;
//}
HugeInteger HugeInteger::add(const int HugeInteger &)
{
HugeInteger object;
int carry;
for (int i = MAX2; i >= 0; i)
{
object.result[i] = object.op1[i] + object.op2[i] + carry;
carry = 0;
while (result[i] >= 10)
{
object.op1[i] = 10;
carry++;
}
}
}
HugeInteger HugeInteger:: mult(const int HugeInteger &)
{
int mult_array[MAX] = {0};
int addzero_ctr;
int lastDigit;
int firstDigit;
const int num = 10;
int product_holder;
for (int m = (MAX2); m >= 0; m) // This 'for' loop essentially sums together the results of the below 'for' loop to carry out the multiplication
{
for (int i = (MAX2); i >= 0; i) // This 'for' loop multiplies all of op1 by the last digit of op2 and puts the value into result[i]
{
product_holder = op1[i] * op2[m];
object.op1[i] = product_holder;
lastDigit = product_holder % num;
object.result[i] = firstDigit;
product_holder = lastDigit;
firstDigit = product_holder / num;
object.result[i] += lastDigit;
}
if (addzero_ctr != 0) // solution to below
{
for (int i = 0; i <= (MAX2  addzero_ctr); i++)//This is a lot of overhead when addzero_ctr = 0
{
object.op1[i] = object.result[i+addzero_ctr];
}
}
for (int i = addzero_ctr; i > 0; i) // Since we need to carry a zero during multiplication, the contents of the array must shift to the left to make room for the zeroes
{
object.result[MAXi] = 0;
}
// cout << "\n"; // Use this comment section to check which two numbers the system adds
// cout << "These are the two numbers being added: \n";
// for (int i = 0; i <= MAX2; i++)
// {
// cout << mult_array[i];
// }
// cout << " + ";
// for (int i = 0; i <= MAX2; i++)
// {
// cout << result[i];
// }
// cout << endl;
add(object);
addzero_ctr++;
for (int i = 0; i <= MAX2; i++)
{
mult_array[i] = object.op1[i];
// cout << "mult[i] = " << mult_array[i] << endl; // Use this comment section to check what result[i] is immediately before m is decremented
}
}
}
void HugeInteger::display() // Displays result of array as a single integer
{
bool eraseZeroes = true;
cout << "Answer is: ";
for (int i = 0; i <= MAX2; i++)
{
if (result[i] != 0  eraseZeroes == false)
{
cout << result[i];
eraseZeroes = false; // The boolean variable eraseZeroes is used to erase superflous zeroes (like 0009 instead of 9)
}
}
if (eraseZeroes) // If the user multiplies by zero (or adds zero and zero), we need to cout a zero.
{
cout << 0;
}
cout << endl;
}
//void HugeInteger::create_array(int num1, int num2, int op1[], int op2[]) // Converts int into an array of 40 digits
//{
// for (int i = MAX2; i >= 0; i)
// {
// lastDigit = (num1 % num);
// op1[i] = lastDigit;
// num1 = lastDigit;
// num1 = (num1 / num);
// }
// lastDigit = 0;
// for (int i = MAX2; i >= 0; i)
// {
// lastDigit = (num2 % num);
// op2[i] = lastDigit;
// num2 = lastDigit;
// num2 = (num2 / num);
// }
//}
 