C ++程序是打印内存地址而不是值

Question

#include <iostream>
#include <cstdlib>

using namespace std;

// Function Prototype
void popCalculator(int &, int &, double &, double &);
void popFinder(int &, int &, int &, double &, double &);

int popArray[101];

int main()
{

    int startingPop;
    int population;
    double birthRate;
    double deathRate;
    int numYears;

    // These are the prompts for the user to enter the starting population,
    // the annual birth rate, the annual death rate, and the number of years.
    // Birth rate and death rate need to be entered as decimals.

    cout << "This program calculates population change.\n";

    // This is where you enter the starting population size and the annual birth
    // rate. If the starting population is less than two, you have to enter
    // a new starting population. Likewise, if the birth rate percent is
    // less than 0, you have to enter a new one.

    cout << "Enter the starting population size: Enter the annual birth rate" <<
              "(as % of current population: ";
    cin >> startingPop;
    while (startingPop < 2)
    {
        cout << "Please re-enter: Starting population must be 2 or more.";
        cin >> population;
    }
    cin >> birthRate;
    while (birthRate < 0)
    {
        cout << "Birth rate percent cannot be negative.\n";
        cout << "Please re-enter: ";
        cin >> birthRate;
    }

    // This is where you enter the annual death rate population.
    // If the death rate percent is less than 0, you have to enter a new one.

    cout << "Enter the annual death rate (as % of current population): ";
    cin >> deathRate;
    while (deathRate < 0)
    {
        cout << "Death rate percent cannot be negative.\n";
        cout << "Please re-enter: ";
        cin >> deathRate;
    }

    // This is where you enter the number of years to view the population
    // changes over. The number can't be less than zero or greater than 100
    // and you will be prompted to enter a new one if the number falls
    // in either of those categories.

    cout << "For how many years do you wish to view population changes? ";
    cin >> numYears;
    while (numYears < 0 || numYears > 100)
    {
        cout << "Years must be one or more, but less than or equal to 100.\n";
        cout << "Please re-enter: ";
        cin >> numYears;
    }

    // This prints out what the starting population is before the program
    // prints out the rest of the population listings

    cout << "Starting population: " << startingPop << endl << endl;
    popFinder(startingPop, population, numYears, birthRate, deathRate);
}

void popCalculator(int &startingPop, int &population, double &birthRate, double &deathRate)
{
    population = startingPop + (startingPop * birthRate) - (startingPop * deathRate);
    population = population + (population * birthRate) - (population * deathRate);
}

void popFinder(int &startingPop, int &population, int &numYears, double &birthRate, double &deathRate)
{
    int i;

    for(i = 1; i <= numYears; i++)
    {
        popArray[] = population;
        if (population < 0)
        {
            population = 0;
            cout << "Population at the end of year " << i << " is " << static_cast<int>(population);
        }
        cout << "Population at the end of year " << i << " is " << static_cast<int>(population) << endl;
    }
}

到目前为止我的代码，我几乎已经完成了。该计划背后的想法是获取起始人口，出生率，死亡率和年数的值，计算这些年份的人口，将这些值存储在一个数组中，然后打印出来。我现在的主要问题是，我似乎正在打印出我所假设的内存地址而不是值。我觉得我已经接近搞清楚了，但这部分让我感到非常难过，我不知道该怎么做。任何帮助将非常感谢！