它一直说使用变量模式而不进行初始化

Question

我正在使用Visual Studios Express 2013，它一直给我一个错误，说明在没有初始化的情况下使用变量模式但它已初始化。你可以看到我完成了所有事情，我不知道我做错了什么。所以，我需要你的帮助。

这是导致问题的代码

            double getMode(int *array, int size)
        {
            int Mode, Most, Count;
            Count = Most = 0;

            for (int i = 0; i < size; i++)
            {
                Count++;
                if (*(array + i) < *(array + i + 1))
                {
                    if (Count > Most)
                    {
                        Mode = *(array + i);
                        Most = Count;
                    }
                    Count = 0;
                }
            }
            return Mode;
        }

整个计划

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

// Function prototype
void getData(int *, int);
void selectionSort(int *, int);
double getAvg(int *, int);
double getMedian(int *, int);
int getMode(int *, int);

int main()
{
    int *Movies, Stud, Mode;
    double Avg, Med;

    // Ask user how many students were surveyed.
    cout << "How many students were surveyed? ";
    cin >> Stud;

    Movies = new int[Stud];

    getData(Movies, Stud);

    selectionSort(Movies, Stud);

    Avg = getAvg(Movies, Stud);

    Med = getMedian(Movies, Stud);

    Mode = getMode(Movies, Stud);

    cout << "Statistical results for the number of movies\n"
        << "     college students see in a month.\n";
    cout << fixed << showpoint << setprecision(2);
    cout << "Average: " << Avg << endl;
    cout << "Median:  " << Med << endl;
    cout << "Mode:    " << Mode << endl;

    delete[] Movies;
    Movies = 0;

    return 0;
}

//*******************************************************************************
//                                  getData                                     *
// The function asks the user to enter the survey data and stores it in an      *
// integer array. The size parameter holds the size of the array.               *
//*******************************************************************************
void getData(int *array, int size)
{
    cout << "Enter the number of movies each student has seen in the month.\n";
    for (int i = 0; i < size; i++)
    {
        cout << "Student " << (i + 1) << ": ";
        cin >> *(array + i);
    }
}

//*******************************************************************************
//                                    selectionSort                             *
// This function performs an ascending-order selection sort on array. The       *
// parameter size holds the number of elements in the array.                    *
//*******************************************************************************
void selectionSort(int *array, int size)
{
    int scan, minIndex, minValue;

    for (int scan = 0; scan < (size - 1); scan++)
    {
        minIndex = scan;
        minValue = *(array + scan);
        for (int i = scan + 1; i < size; i++)
        {
            if (*(array + i) < minValue)
            {
                minValue = *(array + i);
                minIndex = i;
            }
        }
        *(array + minIndex) = *(array + scan);
        *(array + scan) = minValue;
    }
}

//*******************************************************************************
//                                  getAvg                                      *
// This function calculates and returns the average of the values in array. The *
// parameter size holds the number of elements in array.                        * 
//*******************************************************************************
double getAvg(int *array, int size)
{
    double Sum = 0;
    for (int i = 0; i < size; i++)
    {
        Sum += *(array + i);
    }
    return Sum / size;
}

//*******************************************************************************
//                                 getMedian                                    *
// This function calculates and returns the median of the values in the array.  *
// The parameter size holds the number of elements in the array.                *
//*******************************************************************************
double getMedian(int *array, int size)
{
    int Mid = (size - 1) / 2;
    double Med;

    if (size % 2 == 0)
    {
        Med = (*(array + Mid) + *(array + (Mid + 1))) / 2;
    }
    else
        Med = *(array + Mid);

    return Med;
}

//*******************************************************************************
//                                  getMode                                     *
// This function calculates and returns the mode of the values in the array.    *
// The parameter size holds the number of elements in the array.                *
//*******************************************************************************
int getMode(int *array, int size)
{
    int Mode, Most, Count;
    Count = Most = 0;

    for (int i = 0; i < size; i++)
    {
        Count++;
        if (*(array + i) < *(array + i + 1))
        {
            if (Count > Most)
            {
                Mode = *(array + i);
                Most = Count;
            }
            Count = 0;
        }
    }
    return Mode;
}

Answer 1

在该函数上创建一个断点。您可以在if (*(array + i) < *(array + i + 1))中看到，有时会返回false值，这就是模式未初始化的原因。