由于堆损坏,应用程序已触发断点
Application has triggered a breakpoint due to heap corruption
我的应用程序抛出异常很可能是由于堆损坏,因为给出的错误代码是 c0000374。
它在第 :
行创建对象时执行此操作
Library library2("2");
我的代码:
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
class Book
{
private:
char author[50];
char bookid[10];
char title[80];
public:
Book(char* nid, char* ntitle, char* nauthor) {
strcpy(author, nauthor);
strcpy(title, ntitle);
strcpy(bookid, nid);
}
Book() {
strcpy(author, "[=11=]");
strcpy(title, "[=11=]");
strcpy(bookid, "[=11=]");
}
void operator= (Book b) {
strcpy(author, b.getAuthor());
strcpy(title, b.getTitle());
strcpy(bookid, b.getBookID());
}
friend ostream& operator<< (ostream& out, Book b) {
out << b.title << "\t" << b.author << "\t" << b.bookid << endl;
return out;
}
friend bool operator== (Book b1, Book b2) {
return (strcmp(b1.bookid, b2.bookid));
}
char* getAuthor() { return author; }
char* getBookID() { return bookid; }
char* getTitle() { return title; }
};
class Library {
private:
//libId: holds the library ID
string libId;
//Pointer to the array that holds the book objects
Book* bookArr;
//holds the number of books added in the array.
int bookscount;
void resizeBookArray(Book book) {
bookscount++;
Book* newBookArr = new Book[bookscount];
for (int i = 0; i < bookscount-1; i++)
{
newBookArr[i] = bookArr[i];
}
delete[] bookArr;
bookArr = new Book[bookscount];
newBookArr[bookscount] = book;
bookArr = newBookArr;
newBookArr = nullptr;
}
public:
Library(string alibId) {
libId = alibId;
bookscount = 0;
bookArr = new Book[bookscount];
}
void operator= (Library lib) {
bookscount = lib.getBookNum();
copyBookArray(lib.getBookArr());
}
void addBook(Book book) {
if (!search(book)) {
resizeBookArray(book);
}
}
bool search(Book book)
{
for (int i = 0; i < bookscount; i++)
{
if (bookArr[i] == book)
{
return true;
}
}
return false;
}
friend ostream& operator<< (ostream& out, Library lib) {
for (int i = 0; i < lib.bookscount; i++)
{
out << lib.bookArr[i];
}
return out;
}
string getID() { return libId; }
int getBookNum() { return bookscount; }
Book* getBookArr() { return bookArr; }
void copyBookArray(Book* bArr) {
delete[] bookArr;
Book* bookArr = new Book[bookscount];
for (int i = 0; i < bookscount; i++)
{
bookArr[i] = bArr[i];
}
}
};
void readBooksItems(Library& lib) {
ifstream fin("book.txt");
if (fin.fail()) cout << "Input file error!";
char author[50];
char bookid[10];
char title[80];
while (!fin.eof())
{
fin >> bookid;
fin.ignore();
fin.getline(title, 80);
fin.getline(author, 50);
Book btemp(bookid, title, author);
lib.addBook(btemp);
}
fin.close();
}
//getMoreBooks function, gets additional book from the user, and adds the book into the array
Library getMoreBooks(Library lib)
{
char bId[10], btitle[80], bauthor[50];
cout << "Enter book id:";
cin.getline(bId, 10);
cout << "Enter title: ";
cin.getline(btitle, 80);
cout << "Enter author: ";
cin.getline(bauthor, 50);
Book b(bId, btitle, bauthor);
lib.addBook(b);
return lib;
}
int main()
{
int numvideos, numbooks;
Library library1("1");
readBooksItems(library1);
Library library2("2");
library2 = library1;
int nbooks;
cout << "How many new books to add in library 1: ";
cin >> nbooks;
cin.ignore();
for (int i = 0; i < nbooks; i++)
{
library1 = getMoreBooks(library1);
}
cout << "How many new books to add in library 2: ";
cin >> nbooks;
cin.ignore();
for (int i = 0; i < nbooks; i++)
{
library2 = getMoreBooks(library2);
}
cout << "=======Printing all books in library 1========= " << endl;
cout << library1;
cout << "=======Printing all books in library 2========= " << endl;
cout << library2;
return 0;
}
输入文件book.txt:
111
Cloud Computing
John Rapheal
222
Programming 1
Sam Smiths
333
UML 2 for Dummies
Michael Jesse Chonoles
这行代码写入数组末尾,触发未定义的行为。
newBookArr[bookscount] = book;
我的应用程序抛出异常很可能是由于堆损坏,因为给出的错误代码是 c0000374。
它在第 :
行创建对象时执行此操作Library library2("2");
我的代码:
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
class Book
{
private:
char author[50];
char bookid[10];
char title[80];
public:
Book(char* nid, char* ntitle, char* nauthor) {
strcpy(author, nauthor);
strcpy(title, ntitle);
strcpy(bookid, nid);
}
Book() {
strcpy(author, "[=11=]");
strcpy(title, "[=11=]");
strcpy(bookid, "[=11=]");
}
void operator= (Book b) {
strcpy(author, b.getAuthor());
strcpy(title, b.getTitle());
strcpy(bookid, b.getBookID());
}
friend ostream& operator<< (ostream& out, Book b) {
out << b.title << "\t" << b.author << "\t" << b.bookid << endl;
return out;
}
friend bool operator== (Book b1, Book b2) {
return (strcmp(b1.bookid, b2.bookid));
}
char* getAuthor() { return author; }
char* getBookID() { return bookid; }
char* getTitle() { return title; }
};
class Library {
private:
//libId: holds the library ID
string libId;
//Pointer to the array that holds the book objects
Book* bookArr;
//holds the number of books added in the array.
int bookscount;
void resizeBookArray(Book book) {
bookscount++;
Book* newBookArr = new Book[bookscount];
for (int i = 0; i < bookscount-1; i++)
{
newBookArr[i] = bookArr[i];
}
delete[] bookArr;
bookArr = new Book[bookscount];
newBookArr[bookscount] = book;
bookArr = newBookArr;
newBookArr = nullptr;
}
public:
Library(string alibId) {
libId = alibId;
bookscount = 0;
bookArr = new Book[bookscount];
}
void operator= (Library lib) {
bookscount = lib.getBookNum();
copyBookArray(lib.getBookArr());
}
void addBook(Book book) {
if (!search(book)) {
resizeBookArray(book);
}
}
bool search(Book book)
{
for (int i = 0; i < bookscount; i++)
{
if (bookArr[i] == book)
{
return true;
}
}
return false;
}
friend ostream& operator<< (ostream& out, Library lib) {
for (int i = 0; i < lib.bookscount; i++)
{
out << lib.bookArr[i];
}
return out;
}
string getID() { return libId; }
int getBookNum() { return bookscount; }
Book* getBookArr() { return bookArr; }
void copyBookArray(Book* bArr) {
delete[] bookArr;
Book* bookArr = new Book[bookscount];
for (int i = 0; i < bookscount; i++)
{
bookArr[i] = bArr[i];
}
}
};
void readBooksItems(Library& lib) {
ifstream fin("book.txt");
if (fin.fail()) cout << "Input file error!";
char author[50];
char bookid[10];
char title[80];
while (!fin.eof())
{
fin >> bookid;
fin.ignore();
fin.getline(title, 80);
fin.getline(author, 50);
Book btemp(bookid, title, author);
lib.addBook(btemp);
}
fin.close();
}
//getMoreBooks function, gets additional book from the user, and adds the book into the array
Library getMoreBooks(Library lib)
{
char bId[10], btitle[80], bauthor[50];
cout << "Enter book id:";
cin.getline(bId, 10);
cout << "Enter title: ";
cin.getline(btitle, 80);
cout << "Enter author: ";
cin.getline(bauthor, 50);
Book b(bId, btitle, bauthor);
lib.addBook(b);
return lib;
}
int main()
{
int numvideos, numbooks;
Library library1("1");
readBooksItems(library1);
Library library2("2");
library2 = library1;
int nbooks;
cout << "How many new books to add in library 1: ";
cin >> nbooks;
cin.ignore();
for (int i = 0; i < nbooks; i++)
{
library1 = getMoreBooks(library1);
}
cout << "How many new books to add in library 2: ";
cin >> nbooks;
cin.ignore();
for (int i = 0; i < nbooks; i++)
{
library2 = getMoreBooks(library2);
}
cout << "=======Printing all books in library 1========= " << endl;
cout << library1;
cout << "=======Printing all books in library 2========= " << endl;
cout << library2;
return 0;
}
输入文件book.txt:
111
Cloud Computing
John Rapheal
222
Programming 1
Sam Smiths
333
UML 2 for Dummies
Michael Jesse Chonoles
这行代码写入数组末尾,触发未定义的行为。
newBookArr[bookscount] = book;