Outputting each instance value.

agirideep (12)
Hello I have a problem outputting each
value for the getIndvCost() function and I wanted to
see if anyone knew how to output them using pointers.

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//John 3:16
#include <iostream>
#include <iomanip>
#include <random>
#include "Stat.h"

using namespace std;

int main()
{
   Statistics *people = nullptr;
   people = new Statistics[100];
   srand (time(NULL));

   for (Statistics *ptr = people; ptr < people + 100; ++ptr)
   {
      (*ptr).addPrice(rand() % 1000000 + 100000);
   }

   cout << fixed << setprecision(2) << endl;
   cout << "Statistics\n{\n";
   for (Statistics *ptr = people; ptr < people + 100; ++ptr)
   {
      cout << setw(2) << "[" << setw(2) << ptr - people << "] = $";
      ptr->getIndvCost();
      cout << endl;
   }
   cout << "}" << endl;

   cout << fixed << setprecision(2) << endl;
   cout << "Total price = $" << (*people).getTotalCost() << endl;
   cout << "Total people = " << (*people).getCount() << endl;
}

Statistics.h
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Duetoronomy 4
#ifndef STAT_H
#define STAT_H

class Statistics
{
   private:
      static double totalCost;
      static double peopleCount;
      int individualCost;
   public:
      Statistics()
      { peopleCount++; }
      
      void addPrice(double p)
      { individualCost += p;
        totalCost += p; }
      
      double getIndvCost()
      { return individualCost; }

      double getTotalCost()
      { return totalCost; }
      int getCount()
      { return peopleCount; }
};

double Statistics::totalCost = 0;
double Statistics::peopleCount = 0;

#endif
Last edited on
keskiverto (10402)
We can't tell what your program does without the definition of Statistics.
agirideep (12)
Fixed.
seeplus (6591)
"that whoever believes in C++ shall not stagnate but will always be learning"

keskiverto (10402)
The ptr->getIndvCost(); is like line 2 below:
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int main() {
  42;
}

No side-effects (and no output). On the other hand, cout << ptr->getIndvCost(); ...
seeplus (6591)
 
 
(*ptr).addPrice(rand() % 1000000 + 100000);


Alternative:

 
 
ptr->addPrice(rand() % 1000000 + 100000);

Last edited on
keskiverto (10402)
There is more than two valid syntaxes, are there?
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(*ptr).addPrice(42);
ptr->addPrice(42);
ptr[0].addPrice(42);
(*ptr+0).addPrice(42);
(*0+ptr).addPrice(42);
0[ptr].addPrice(42);


If member function is declared static, then there is call without object too:
Statistics::getTotalCost()
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