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#include<iostream>
#include<iomanip>
#include<string>
#include<fstream>
#include<cstdlib>
#include<windows.h>
using namespace std;
void menu();
void tutor();
void processing();
void getRscore(char[]);
void getBscore(char[]);
void ivnmain();
void ClearScreen()
{
HANDLE hStdOut;
CONSOLE_SCREEN_BUFFER_INFO csbi;
DWORD count;
DWORD cellCount;
COORD homeCoords = { 0, 0 };
hStdOut = GetStdHandle( STD_OUTPUT_HANDLE );
if (hStdOut == INVALID_HANDLE_VALUE) return;
if (!GetConsoleScreenBufferInfo( hStdOut, &csbi )) return;
cellCount = csbi.dwSize.X *csbi.dwSize.Y;
if (!FillConsoleOutputCharacter(
hStdOut,
(TCHAR) ' ',
cellCount,
homeCoords,
&count
)) return;
if (!FillConsoleOutputAttribute(
hStdOut,
csbi.wAttributes,
cellCount,
homeCoords,
&count
)) return;
SetConsoleCursorPosition( hStdOut, homeCoords );
}
char EXIT='N';
int main()
{
menu();
return 0;
}
void menu ()
{
char choice;
ClearScreen();
cout<<"Welcome to the menu which contains a few of the programs I have created \n";
cout<<"during my class time. Please enter your menu choice after the menu is displayed.\n";
cout<<"Please only enter the upper or lower case letters presented as menu options,\n";
cout<<"numbers will not be accepted.\n\n";
cin>>choice;
while (choice!='a' && choice!='A' && choice!='b' && choice!='B' && choice!='c' && choice!='C' && choice!='d' && choice!='D' && choice!='e' && choice!='E')
{
cout<<"That is not a valid entry, please enter a letter that was presented as\n";
cout<<"a menu option, case does not matter." ;
cin>>choice;
cout<<endl <<endl;
}
do
{
switch(choice)
{
case 'a':
'A': tutor();
break;
case 'b':
'B': processing();
break;
case 'c':
'C': grademachine();
break;
case 'd':
'D': ivnmain();
break;
case 'e':
'E': Exit();
} break;
}
while (EXIT=='N' || EXIT=='n')
cout<<"Good bye";
system ("pause");
}
void tutor()
{
ClearScreen();
cout<<"Welcome to the Math Tutor program, run it as many times \n";
cout<<"as you need for practice!" <<endl <<endl;
unsigned seed= time (0);
srand (seed);
cout<<"You will now be presented with a math problem, please solve it.\n";
system ("pause");
cout<< endl;
double num1, num2, answer, studentanswer;
num1= rand() % 100;
num2= rand() % 100;
answer=num2-num1;
cout<<"(" << num1 <<" + y = " << num2 <<")" << endl;
cout<<"Please enter what you believe to be the correct answer: ";
cin>> studentanswer;
cout<<endl <<endl;
if (answer==studentanswer)
cout<<"You are correct!!!" <<endl;
else
cout<<"Your answer is not correct. The correct answer is: " <<answer <<endl;
}
const int SIZE=20;
void processing()
{
ClearScreen();
int numofnum, sumofnum, number;
double averagenum;
numofnum=0, sumofnum=0, averagenum=0;
ifstream numfile;
numfile.open("random.txt");
if (numfile)
{
while (numfile >> number)
{
numofnum++;
sumofnum+=number;
}
averagenum=sumofnum/numofnum;
cout<<"The number of numbers in the file is: " <<numofnum <<", the sum of all the numbers is: " <<sumofnum <<",\n";
cout<<"while the average of the numbers is: " <<averagenum <<"." <<endl;
system ("pause");
}
else
{
cout<<"There was an error reading the file, goodbye." <<endl;
}
}
void grademachine()
{
ClearScreen();
char studentanswers[SIZE];
char correctanswers[SIZE];
char wrong[SIZE];
int qnumber[SIZE];
int numberWrong = 0;
int f=0;
int average=0;
getRscore(studentanswers);
getBscore(correctanswers);
for (int index = 0; index < SIZE; index++)
{
if (studentanswers[index] != correctanswers[index])
{
wrong[numberWrong] = studentanswers[index];
numberWrong++;
qnumber[f]=index;
f++;
}
}
cout<<"The student answers have been pulled from their file and compared to \n";
cout<<"the correct answers. The amount of answers that were wrong is: " <<numberWrong<<endl;
cout<<"The incorrect answers are as follows: ";
for(int i = 0; i < numberWrong; i++)
{
cout<<qnumber[i]+1 <<"." << wrong[i] << " ";
}
int numright=SIZE-numberWrong;
average=numright/SIZE;
cout<<setprecision(2) <<fixed;
cout<<"The average is: " <<average;
cout << endl;
}
void getRscore(char score[])
{ ifstream inFile;
int count = 0;
inFile.open("StudentsAnswers.txt");
if (inFile.fail())
{
cout << "File failed to open " << endl;
cin.ignore();
exit(0);
}
inFile >> score[count];
while(inFile)
{
count++;
inFile >> score[count];
}
inFile.close();
}
void getBscore(char score[])
{ifstream inFile;
int count = 0;
inFile.open("CorrectAnswers.txt");
if (inFile.fail())
{
cout << "File failed to open " << endl;
cin.ignore();
exit(0);
}
inFile >> score[count];
while(inFile)
{
count++;
inFile >> score[count];
}
inFile.close();
}
class Inventory
{
private:
int itemNumber;
int quantity;
double cost;
double totalcost;
public:
Inventory();
Inventory(int, int, double);
void setItemnumber(int);
void setQuantity(int);
void setCost(double);
void setTotalCost(int, double);
int getItemNumber() const;
int getQuantity() const;
double getCost() const;
double getTotalCost() const;
};
Inventory::Inventory()
{
itemNumber=0;
quantity=0;
cost=0;
totalcost=0;
}
Inventory::Inventory(int number, int amount, double Cost)
{
itemNumber=number;
quantity=amount;
cost=Cost;
setTotalCost(quantity, cost);
}
void Inventory::setItemnumber(int number)
{
itemNumber=number;
}
void Inventory::setQuantity(int amount)
{
quantity=amount;
}
void Inventory::setCost(double Cost)
{
cost=Cost;
}
void Inventory::setTotalCost(int amount, double Cost)
{
totalcost=amount*Cost;
}
int Inventory::getItemNumber() const
{
return itemNumber;
}
int Inventory::getQuantity() const
{
return quantity;
}
double Inventory::getCost() const
{
return cost;
}
double Inventory::getTotalCost() const
{
return totalcost;
}
void ivnmain()
{
ClearScreen();
int ITEMNUMBER, QUANTITY;
double COST;
cout<<"Welcome, when asked to enter informations please do not enter" <<endl;
cout<<"a negative number. Please enter the first items number: ";
cin>>ITEMNUMBER;
cout<<"Please enter the first items quantity: ";
cin>>QUANTITY;
cout<<"Please enter the first items cost: ";
cin>>COST;
Inventory item1;
item1.setItemnumber(ITEMNUMBER);
item1.setQuantity(QUANTITY);
item1.setCost(COST);
item1.setTotalCost(QUANTITY, COST);
cout<<"Thankyou, now for the second item: " <<endl;
cout<<"Please enter the second items number:";
cin>>ITEMNUMBER;
cout<<"Please enter the second items quantity: ";
cin>>QUANTITY;
cout<<"Please enter the second items cost: ";
cin>>COST;
Inventory item2(ITEMNUMBER, QUANTITY, COST);
cout<< setprecision(2) <<fixed <<endl <<endl;
cout<<"Here are the two items you have put into inventory:" <<endl;
cout<<"Item numbered " <<item1.getItemNumber() <<" has " <<item1.getQuantity();
cout<<" in stock at a price" <<endl;
cout<<"of $" <<item1.getCost() <<". In total they are worth $" <<item1.getTotalCost();
cout<<"." <<endl <<endl;
cout<<"Item numbered " <<item2.getItemNumber() <<" has " <<item2.getQuantity();
cout<<" in stock at a price" <<endl;
cout<<"of $" <<item2.getCost() <<". In total they are worth $" <<item2.getTotalCost() <<endl;
system ("pause");
}
void Exit()
{
ClearScreen();
cout<<"Are you sure you want to exit? Y/N ";
cin>>EXIT;
}
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