c++ - how to make cin >> numOfSales to take only intege? I don\'t want decimal p

Question

c++ - how to make cin >> numOfSales to take only intege? I don't want decimal points

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#include <iostream>
#include <iomanip>
using namespace std;

int main()

{

   float *monthSales;       // a pointer used to point to an array
   // holding monthly sales
   float total = 0;       // total of all sales
   float average;           // average of monthly sales
   int numOfSales;       // number of sales to be processed
   int count;           // loop counter

   cout << fixed << showpoint << setprecision(2);

   cout << "How many monthly sales will be processed? ";
   cin >> numOfSales;
   while (cin.fail())                               //Error handling if input is not an integer
   {
       cout << " Invaild input.Try Again. How many monthly sales will be processed? ";
       cin.clear();
       cin.ignore(256, ' ');
       cin >> numOfSales;
   }

   monthSales = new float[numOfSales]; // Fill in the code to allocate memory for the array pointed to by
   // monthSales.

   if (numOfSales <= 0// Fill in the condition to determine if memory has been
       // allocated (or eliminate this if construct if your instructor
       // tells you it is not needed for your compiler)
       )

   {
       cout << "Error allocating memory! ";
       return 1;
   }

   cout << "Enter the sales below ";

   for (count = 0; count < numOfSales; count++)
   {
       cout << "Sales for Month number "
           << count + 1 // Fill in code to show the number of the month
           << ": ";

       cin >> monthSales[count]; // Fill in code to bring sales into an element of the array

       while (cin.fail() || monthSales[count]<0)                              
       {
           cout << " Invaild input.Try Again. Sales for Month number "
               << count + 1 // Fill in code to show the number of the month
               << ": ";
           cin.clear();
           cin.ignore(256, ' ');
           cin >> monthSales[count];
       }
   }

   for (count = 0; count < numOfSales; count++)
   {
       total = total + monthSales[count];
   }

   average = total / numOfSales;// Fill in code to find the average

       cout << "Average Monthly sale is $" << average << endl;
       delete[] monthSales; // Fill in the code to deallocate memory assigned to the array.

   system("pause");
   return 0;
}

Explanation / Answer

monthSales = new float[numOfSales] statement is wrong since,  monthSales is float.

what you need to do , is to typecast numsales and all calculations involved it to int.

or at the end only do the typecasting.

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