Question

当我运行以下代码时：

#include <iostream>
#include <iomanip>
#include <string>
#include <fstream>
using namespace std;
const int SIZE = 50;

//PROTOTYPES
int loadArrays(string[], int[]);
double computeAverage (int, int[]);
void printEmployees(string[], int[], int);
int addEmployee(string[], int[], int);
int validateYears();
int removeEmployee (string[], int[], int);


//MAIN
int main()
{
    string names[SIZE];
    int experience[SIZE];
    int noRecords;


    cout << "Initial array load:\n\n"<<endl;
    noRecords=loadArrays(names,experience);
    printEmployees(names,experience,noRecords);

    cout << "An employee added:\n\n"<<endl;
    noRecords=addEmployee(names,experience,noRecords);
    printEmployees(names,experience,noRecords);

    cout << "Attempted to add same employee:\n\n"<<endl;
    noRecords=addEmployee(names,experience,noRecords); 
    printEmployees(names,experience,noRecords);

    cout << "Employee deleted:\n\n"<<endl;
    noRecords=removeEmployee(names,experience,noRecords);
    printEmployees(names,experience,noRecords);

    cout << "Attempted to delete same employee load\n\n"<<endl;
    noRecords=removeEmployee(names,experience,noRecords);       
        printEmployees(names,experience,noRecords);

    cout << "Program ended successfully"<<endl;
    system("type employees.dat");
    system("pause");

}

//Functions
int loadArrays(string empName[], int expYears[])
{
    int length=0;
    int ctr=0;
    ifstream fin("employees.dat");
    if (!fin.is_open())
    {
        cout << "File cannot be opened" << endl;
        system("pause");
        exit(-1);
    }
    for (; length < SIZE; length++)
    {
        getline(fin,empName[length]);
        fin >> expYears[length];
        if (fin.eof())
            break;
        fin.ignore(80, '\n');
    }
    cout << ("Successfully loaded arrays!\n\n");
    return length;
}

double computeAverage (int length, int expYears[])
{
    int totalExp;
    double average;
    for (int ctr=0; ctr < length; ctr++)
    {
        totalExp+=expYears[ctr];
    }
    return average = totalExp/length;
}

void printEmployees(string names[], int experience[], int noRecords)
{
    for (int ctr=0; ctr < noRecords; ctr++)
        cout << "Employee's name: " <<names[ctr] << endl << "Years of experience " << experience[ctr] << endl << endl;
    cout <<"There are " << noRecords << " records." << endl << endl;
}

int addEmployee(string name[], int experience[], int noRecords)
{
    string newEmployee;
    int newExperience;
    int index;
    int ctr;
    if (noRecords == SIZE)
        cout << "There is no room for more records!";
    else
    {
        cout << "Input a new employee's name: ";
        getline(cin,newEmployee);
        newExperience = validateYears();
    }
    for (index=0; index < noRecords; index++)
    {
        if (name[index]>=newEmployee)
            break;
        if (name[index]==newEmployee)
            cout << "That name is already in our files";
        else
        {
            for (ctr=noRecords; ctr > index; ctr--)
            {
                name[ctr] = name[ctr-1];
                experience[ctr] = experience[ctr-1];
            }
            name[index] = newEmployee;
            experience[index] = newExperience;
            noRecords++;
        }
    }
    return noRecords;
}

int validateYears()
{
        int newExperience;
    cout << endl << "Input the employees experience: ";
    cin >> newExperience;
    while (newExperience < 0 || newExperience > 100 || cin.fail())
    {
        cout << "Please enter a valid number between one and one-hundred to represent the number of years of experience: ";
        cin.ignore(80, '\n');
        cin >> newExperience;
    }
    return newExperience;
}

int removeEmployee (string names[], int experience[], int noRecords)
{
    int ctr;
    string employeeToRemove;
    cout << "Enter the name of the employee you wish to remove (In 'J. Doe' format): ";
    getline (cin, employeeToRemove);
    for (ctr = 0; ctr < noRecords; ctr++)
    {
        if (employeeToRemove == names[ctr])
            break;
        else if (ctr == noRecords)
            cout << "That name is not in our records";
    }
    for (ctr; ctr < noRecords; ctr++)
    {
        names[ctr] = names[ctr+1];
        experience[ctr] = experience[ctr++];
    }
    noRecords--;
    return noRecords;
}

在输入员工姓名和员工多年的经验之后，它给了我

Employee.exe中0x5a52ca58（msvcr100d.dll）的未处理异常： 0xC0000005：访问冲突写入位置0xf18be2b7。

我试过移动变量，但我没有看到问题。提前谢谢！

Answer 1

    for (index; index < noRecords; index++)
    {
        if (name[index]>=newEmployee)
            break;
    }
    if (name[index]==newEmployee)
        cout << "That name is already in our files";
    else
    {
        for (ctr=noRecords; ctr > index; ctr--)
        {
            name[ctr] = name[ctr-1];
            experience[ctr] = experience[ctr-1];
        }
        name[index] = newEmployee;
        experience[index] = newExperience;
        noRecords++;
    }
return noRecords;
}

寻找插入点的for循环不仅仅是搜索插入点。移动了一些支撑架和tadaaa~

感谢您的帮助，我将阅读一些调试教程。

C ++中的“未处理异常”

1 个答案: