Esempio n. 1
0
// Adds number to this and returns the sum
//
// Parameters:
// shared_ptr<AbstractNumber> number	number being added
//
// Returns:
// shared_ptr<AbstractNumber> 			resulting sum of addition
 tr1::shared_ptr<AbstractNumber> Exponent::add(tr1::shared_ptr<AbstractNumber> number){
 	// Checks for cancellation
 	number = number->simplify();
 	if(abs(toDouble() - number->toDouble()) < 0.000001 &&
 	   this->getSign() != number->getSign()){
 		tr1::shared_ptr<AbstractNumber> r(new SmartInteger(0));

 	    return r;
 	}
 	// Checks for duplication/simplification
 	else if(abs(toDouble() - number->toDouble()) < 0.000001 &&
 			this->getSign() == number->getSign()){
 		vector< tr1::shared_ptr<AbstractNumber> > MultVector;
		tr1::shared_ptr<AbstractNumber> i(new SmartInteger(2));
		MultVector.push_back(i);
		tr1::shared_ptr<AbstractNumber> me(new Exponent(base, power, sign));
		MultVector.push_back(me);
		tr1::shared_ptr<AbstractNumber> r(new MultExpression(MultVector, '+'));

	    return r;
  	}

    //Can't tell if they add or not
 	else if(number->getName() == "SumExpression" ||
            number->getName() == "MultExpression"){
 	    return number->add(shared_from_this());
 	}
    // Duplication necessary for simplification
 	// Assuming number is in simplest form

 	// No simplification possible
	else{
		vector< tr1::shared_ptr<AbstractNumber> > SumVector;
		tr1::shared_ptr<AbstractNumber> me(new Exponent(base, power, sign));
		SumVector.push_back(me);
		SumVector.push_back(number);
		tr1::shared_ptr<AbstractNumber> r(new SumExpression(SumVector));

	    return r;
	}

}
Esempio n. 2
0
 // Multiplies number by this and returns the product
 //
 // Parameters:
 // shared_ptr<AbstractNumber> number	number being multiplied
 //
 // Returns:
 // shared_ptr<AbstractNumber> 			resulting product of multiplication
tr1::shared_ptr<AbstractNumber>  Exponent::multiply(tr1::shared_ptr<AbstractNumber> number){
	// Checks for simplification if both exponents
	number = number->simplify();

	if(number->getName() == "Exponent"){
        tr1::shared_ptr<Exponent> givenNumber = tr1::static_pointer_cast<Exponent>(number);
		if(abs(givenNumber->getValue("base")->toDouble() - base->toDouble()) < 0.000001){
			tr1::shared_ptr<AbstractNumber> r(new Exponent(base, power->add(givenNumber->getValue("power")), this->calcSign(number)));
		    return r;
		}
	else if (number->getName() == "Radical") {
		 if (abs(number->getValue("value")->toDouble() - base->toDouble()) < 0.000001 )
		 {
			 std::vector< tr1::shared_ptr<AbstractNumber> > SumVector;
			 tr1::shared_ptr<AbstractNumber> one(new SmartInteger(1));
			 tr1::shared_ptr<AbstractNumber> invertedRoot(new MultExpression(one, number->getValue("root")->noSign(), number->getValue("root")->getSign()));
			 SumVector.push_back(power);
			 SumVector.push_back(invertedRoot);
			 tr1::shared_ptr<AbstractNumber> power(new SumExpression(SumVector));
			 tr1::shared_ptr<AbstractNumber> output(new Exponent(number->getValue("value")->noSign(), power, sign));
			 return output;
		 }
	}
        else{
            tr1::shared_ptr<AbstractNumber> me(new Exponent(base, power, sign));
            tr1::shared_ptr<AbstractNumber> r(new MultExpression(me, number, this->calcSign(number)));
            return r;
        }
	}

	// Checks for simplification if number = base
	// Adds 1 to exponent
	else if(abs(number->toDouble() - base->toDouble()) < 0.000001 ){
		tr1::shared_ptr<AbstractNumber> c(new SmartInteger(1));
		tr1::shared_ptr<AbstractNumber> r(new Exponent(base, power->add(c), this->calcSign(number)));
	    return r;
	}
	else if(number->getName() == "SumExpression" || number->getName() == "MultExpression")
    {
        return number->multiply(shared_from_this());
    }

    vector< tr1::shared_ptr<AbstractNumber> > MultVector;
    tr1::shared_ptr<AbstractNumber> me(new Exponent(base, power, sign));
    MultVector.push_back(me);
    MultVector.push_back(number);
    tr1::shared_ptr<AbstractNumber> r(new MultExpression(MultVector, '+'));

    return r;
}
Esempio n. 3
0
// Divides this by number and returns the product
//
// Parameters:
// shared_ptr<AbstractNumber> number	divisor
//
// Returns:
// shared_ptr<AbstractNumber> 			resulting quotient of division
tr1::shared_ptr<AbstractNumber>  Exponent::divide(tr1::shared_ptr<AbstractNumber>number){
	// Reverses sign if exponent and multiplies
	if(number->getName()=="Exponent"){
        tr1::shared_ptr<Exponent> givenNumber = tr1::static_pointer_cast<Exponent>(number);
		if(givenNumber->getSign()=='-'){
			tr1::shared_ptr<AbstractNumber> r(new Exponent(givenNumber->getValue("base"), givenNumber->getValue("power")));
			return multiply(r);
		}
		else{
            tr1::shared_ptr<AbstractNumber> nOne(new SmartInteger(-1));
            tr1::shared_ptr<AbstractNumber> newPower = givenNumber->getValue("power")->multiply(nOne);
			tr1::shared_ptr<AbstractNumber> r(new Exponent(givenNumber->getValue("base"), newPower, givenNumber->getSign()));
			return multiply(r);
		}
	}

	// Subtracts 1 from power if base = number
	else if(number->toDouble() == base->toDouble()){
		tr1::shared_ptr<AbstractNumber> c(new SmartInteger(-1));
		tr1::shared_ptr<AbstractNumber> r(new Exponent(base, power->add(c), this->calcSign(number)));
		return r;
	}
	else if(number->getName() == "MultExpression")
    {
        tr1::shared_ptr<MultExpression> MultE = tr1::static_pointer_cast<MultExpression>(number);
        vector<tr1::shared_ptr<AbstractNumber> > MultENum = MultE->getNumerator();
        vector<tr1::shared_ptr<AbstractNumber> > MultEDem = MultE->getDenominator();
        if (MultEDem.size() == 0)
        {
            tr1::shared_ptr<AbstractNumber> one(new SmartInteger(1));
            MultEDem.push_back(one);
        }
        tr1::shared_ptr<AbstractNumber> reversedMultE(new MultExpression(MultEDem, MultENum, '+'));
        return reversedMultE->multiply(shared_from_this());
    }

    vector< tr1::shared_ptr<AbstractNumber> > NumVector;
    tr1::shared_ptr<AbstractNumber> me(new Exponent(base, power, sign));
    NumVector.push_back(me);
    vector< tr1::shared_ptr<AbstractNumber> > DenVector;
    DenVector.push_back(number);
    tr1::shared_ptr<AbstractNumber> r(new MultExpression(NumVector, DenVector, this->calcSign(number)));
    return r;
}
Esempio n. 4
0
int main() {

  vector< tr1::shared_ptr<AbstractNumber> > ansHistory;
  vector<string>  expHistory;
  bool menuLoop = true;
    int input = 0;
    int setAns;
    cout << "||||   WELCOME   ||||" << endl;
    cout << "||||   TO OUR    ||||" << endl;
    cout << "|||| CALCULATOR  ||||" << endl;
    cout << " _____________________ " << endl;
    cout << "|  _________________  |" << endl;
    cout << "| |               0 | |" << endl;
    cout << "| |_________________| |" << endl;
    cout << "|  ___ ___ ___   ___  |" << endl;
    cout << "| | 7 | 8 | 9 | | + | |" << endl;
    cout << "| |___|___|___| |___| |" << endl;
    cout << "| | 4 | 5 | 6 | | - | |" << endl;
    cout << "| |___|___|___| |___| |" << endl;
    cout << "| | 1 | 2 | 3 | | x | |" << endl;
    cout << "| |___|___|___| |___| |" << endl;
    cout << "|_____________________|" << endl;

    while (menuLoop)
    {
    	cout << "\nPlease enter one of the options below: " << endl;
    	cout << "=================================================" << endl;
        cout << "1. Compute New Expression                       |" << endl;
        cout << "=================================================" << endl;
        cout << "2. Help                                         |" << endl;
        cout << "=================================================" << endl;
        cout << "3. Review Previous Expressions and Answers      |" << endl;
        cout << "=================================================" << endl;
        cout << "4. Quit                                         |" << endl;
        cout << "=================================================\n" << endl;

        cin>>input;

        if ( !( (1 <= input) && (input <= 4) ) )
        {
            cin.clear();
            while (cin.get() != '\n');
            cout << "\nNot a valid menu option. Please enter 1, 2, 3, or 4." << endl;
            continue;
        }

        switch (input)
        {
            case 1:
            {
                cin.ignore();
                bool keepCompute = true;
                while (keepCompute)
                {

                    string input2;
                    cout << "Enter the expression to compute. (Type 'back' to go back to the main menu)" << endl;
                    getline(cin, input2);
                    if(input2 != "")
                    {


                    	if (input2.find("back") != string::npos)
                    	{
                    		keepCompute = false;
                    	}
                    	else
                    	{

                    				try{
                    					if(input2.rfind("ans") != std::string::npos)
                    					{
                        				unsigned found = input2.rfind("ans");
                                        if (history == "")
                                            history = "0";
                    					input2.replace(found, std::string("ans").length(), "(" + history + ")");

                    					tr1::shared_ptr<AbstractNumber> num(new SumExpression(input2,true));
                    					historyAns = num->simplify();
                    					cout << "Result: \n" << historyAns->toString() << endl;
                    					ansHistory.push_back(historyAns);
                    					history = input2;
                    					expHistory.push_back(history);
                    					}
                    					else
                    					{
                    						tr1::shared_ptr<AbstractNumber> num(new SumExpression(input2,true));
                    						historyAns = num->simplify();
                    						cout << "Result: \n" << historyAns->toString() << endl;
                    						ansHistory.push_back(historyAns);
                    						history = input2;
                    						expHistory.push_back(history);
                    					}


                    				}
                    				catch(exception &msg)
                    				{

                    					cout << "***ERROR: "<< msg.what() << "***"  << endl;
                    				}



                    		}
                    	}
                    else
                    {
                    	cout << "Result: Invalid Expression\n" << endl;
                    }
                }


                break;
            }
            case 2:
                printHelp();

                break;
            case 3:
            	if(ansHistory.size() == 0)
            	{
            		cout << "Please enter some expressions before viewing this option." << endl;
            	}
            	else
            	{
            	cout << "The previous answer was: " << historyAns->toString() << endl;
            	cout << "The previous answer as a decimal: " << historyAns->toDouble() << endl;
            	cout << "This answer may be used in further calculations by using the keyword 'ans'" << endl;
            	cout << "\nThe previous expressions and answers calculated are as follows: " << endl;

            	for(int i=0; i<ansHistory.size(); i++)

            	{

            		cout << "(#" << (ansHistory.size()-i) << ")" << "Expression: " << expHistory[i] << endl;
            		cout << "Answer: " << ansHistory[i]->toString() << "\n" << endl;

            	}




            		cout << "To set 'ans' to a previous expressions's answer, please enter the corresponding digit: " << endl;
            		cin>>setAns;

            		if(!( (1 <= setAns) && (setAns <= ansHistory.size()) ))
            		{

            			cin.clear();
            			while (cin.get() != '\n');
            			cout << "\nNot a valid menu option. Please enter 1-10." << endl;
            			continue;
            		}

            			else if(((1 <= setAns) && (setAns <= ansHistory.size()))== 1)
            			{
            			history = ansHistory[ansHistory.size() - setAns]->toString();


            		}
            		else
            		{
            			cout << "\nNot a valid menu option. Please enter 1-10." << endl;
            		}

            	}
                break;
            case 4:
            	cout << "The calculator will now exit. Thank you!" << endl;
                menuLoop = false;
                break;
        }
    }
}