//Read a polynomial from an inputstream
void Helper::readpoly(std::ifstream& ifs, Polynomial& poly)
{
char c;
while(ifs>>c)
{
int iCoefficient = 0, iExponent = 0;
ifs>>iCoefficient>>c>>iExponent;
ifs>>c;
if(iExponent == 0 && iCoefficient == 0)
return;
else
poly.insert(iCoefficient, iExponent);
}
}
/* Multiplication: multiplies two polynomials
For each term in second polynomial, copies
the first polynomial and multiplies each of
its terms by the second's term and inserts
the results into the output polynomial.
*/
Polynomial operator*(const Polynomial p){
Polynomial output;
Term* currentA = head;
/* for each term in A */
while (currentA->next)
{
/* for each term in B, multiply against
A's term and insert into output*/
Term* currentB = p.head;
while (currentB->next)
{
output.insert(*currentA->next * *currentB->next);
currentB = currentB->next;
}
currentA = currentA->next;
}
return output;
}
int main()
{
ifstream myFile("dataPoly.txt");
string currC;
string currE;
string currL;
double currCoeff;
int currExpon;
int x = 0,y,z,pNum;
string numPoly;
Polynomial* polyArray[12];
for(int i = 0; i < 12; i++)
{
Polynomial* polyList = new Polynomial;
polyArray[i] = polyList;
}
///////////////////////////////////////////////////////////////////////////////////////////
if (myFile.is_open())
{
myFile >> numPoly;
pNum = atoi(numPoly.c_str());
for(int i = 0; i < pNum;i++)
{
Polynomial* polyList = polyArray[i];
myFile >> currC;
myFile >> currE;
currCoeff = atof(currC.c_str());
currExpon = atoi(currE.c_str());
polyList->insert(currCoeff,currExpon,polyArray[10]);
while(currExpon != 0)
{
myFile >> currC;
myFile >> currE;
currCoeff = atof(currC.c_str());
currExpon = atoi(currE.c_str());
polyList->insert(currCoeff,currExpon,polyArray[10]);
}
polyArray[x] = polyList;
x++;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
while(currL.compare("Q") != 0 && myFile >> currL)
{
if (currL.compare("R") == 0)
{
myFile >> currL;
int x = atoi(currL.c_str()) - 1;
polyArray[10]->remove(polyArray[x]);
Polynomial* polyList = polyArray[x];
myFile >> currC;
myFile >> currE;
currCoeff = atof(currC.c_str());
currExpon = atoi(currE.c_str());
polyList->insert(currCoeff,currExpon,polyArray[10]);
while(currExpon != 0)
{
myFile >> currC;
myFile >> currE;
currCoeff = atof(currC.c_str());
currExpon = atoi(currE.c_str());
polyList->insert(currCoeff,currExpon,polyArray[10]);
}
}
else if(currL.compare("A") == 0)
