Changed directory name

headers/Problems/Problem20.hpp

@@ -0,0 +1,62 @@
+//ProjectEuler/ProjectEulerCPP/headers/Problems/Problem20.hpp
+//Matthew Ellison
+// Created: 11-07-18
+//Modified: 08-28-20
+//What is the sum of the digits of 100!?
+//Unless otherwise listed all non-standard includes are my own creation and available from https://bibucket.org/Mattrixwv/myClasses
+//This file contains a header from the gmp library. The library is used for large integers.
+//You can find more information about them at https://gmplib.org/
+//When compiling this file you need to have the gmp library installed as well as linking the libraries to your executable using the -lgmpxx and -lgmp flags
+/*
+	Copyright (C) 2020  Matthew Ellison
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef PROBLEM20_HPP
+#define PROBLEM20_HPP
+
+
+#include <cinttypes>
+#include <string>
+#include "gmpxx.h"
+#include "Problem.hpp"
+
+
+class Problem20 : public Problem{
+private:
+	//Variables
+	//Instance variables
+	mpz_class num;	//Holds the number 100!
+	uint64_t sum;	//The sum of the digits of num
+public:
+	//Constructor
+	Problem20();
+	//Operational functions
+	virtual void solve();	//Solve the problem
+	virtual void reset();	//Reset the problem so it can be run again
+	//Gets
+	virtual std::string getResult();	//Return a string with the solution to the problem
+	mpz_class getNumber() const;	//Returns the number 100!
+	std::string getNumberString() const;	//Returns the number 100! in a string
+	uint64_t getSum() const;	//Returns the sum of the digits of 100!
+};
+
+/* Results:
+100! = 93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
+The sum of the digits is: 648
+It took an average of 4.094 microseconds to run this problem over 100 iterations
+*/
+
+#endif //PROBLEM20_HPP