No syntax errors but my program displays weird numbers - c++

Question

Program works and executes everything properly until I get to the part where the function calculates Annual Sales and Quarterly Averages. I'm not sure if the issue is in the function or in the displaying of the information.
The Annual Sales and Average Quarterly Sales display is -6.27744e+66
I feel like I'm missing something obvious.
#include <iostream>
#include <iomanip>
#include <string>
using namespace std;
struct Company
{
string dName; // Stores Division Name
double firstQSales; // First Quarterly Sales
double sndQSales; // Second Quarterly Sales
double thirdQSales; // Third Quarterly Sales
double fourthQSales; // Fourth Quarterly Sales
double annualSales; // Annual Quarterly Sales
double avgQSales; // Average Quarterly Sales
};
const double NUM_OF_QUARTERS = 4;
void readCorpSales(Company*, int);
void displaySalesData(Company*, int);
void calculateAnnualSales(Company&);
void calculateQuarterlyAvg(Company&);
int main()
{
int corporateSize;
cout << "How many divisions does your corporate has: ";
cin >> corporateSize;
cin.ignore();
while (corporateSize < 0)
{
cout << "Please enter a positive number: ";
cin >> corporateSize;
}
Company* divisions = new Company[corporateSize];
readCorpSales(divisions, corporateSize);
displaySalesData(divisions, corporateSize);
delete[] divisions;
system("pause");
return 0;
}
void readCorpSales(Company *divisions, int a)
{
for (int i = 0; i < a; ++i)
{
cout << "Enter division's name: ";
cin >> divisions[i].dName;
cout << "Enter 1st quarter sales: ";
cin >> divisions[i].firstQSales;
cout << "Enter 2nd quarter sales: ";
cin >> divisions[i].sndQSales;
cout << "Enter 3rd quarter sales: ";
cin >> divisions[i].thirdQSales;
cout << "Enter 4th quarter sales: ";
cin >> divisions[i].fourthQSales;
cout << "\n";
}
}
void displaySalesData(Company* divisions, int a)
{
cout << "\n===============================";
cout << "\n Corporate Data Sales Report";
cout << "\n===============================\n";
cout << "\nDivision Name";
cout << "\t 1st Q ($)";
cout << "\t 2nd Q ($)";
cout << "\t 3rd Q ($)";
cout << "\t 4th Q ($)";
cout << "\t Annual Sales ($)";
cout << "\t Avg Q Sales ($)\n";
for (int i = 0; i < a; ++i)
{
cout << divisions[i].dName << "\t";
cout << divisions[i].firstQSales << "\t";
cout << divisions[i].sndQSales << "\t";
cout << divisions[i].thirdQSales << "\t";
cout << divisions[i].fourthQSales << "\t";
cout << divisions[i].annualSales << "\t";
cout << divisions[i].avgQSales << "\n";
}
}
void calculateAnnualSales(Company &divisions)
{
divisions.annualSales = divisions.firstQSales + divisions.sndQSales + divisions.thirdQSales + divisions.fourthQSales;
}
void calculateQuarterlyAvg(Company &divisions)
{
divisions.avgQSales = divisions.annualSales / 4;
}

Answer 1

Regarding the garbage value, maybe you can refer to this or this.
Other thing, the answer from M.M covered the question