#include <string>
#include <iostream>
#include <fstream>
#include <windows.h>
#include <wininet.h>
#include <winsock.h>
#include <stdio.h>
#include <stdarg.h>
#pragma comment(lib, "wininet.lib")
using namespace std;
const int file_l = 100;
int getpage()
{
HINTERNET hOpen, hURL;
LPCWSTR NameProgram = L"Webreader"; //LPCWSTR == Long Pointer to Const Wide String
LPCWSTR Website;
char file[file_l];
unsigned long read;
//Always need to establish the internet connection with this funcion.
if ( !(hOpen = InternetOpen(NameProgram, INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 )))
{
cerr << "Error in opening internet" << endl;
return 0;
}
Website = L"http://www.sec.gov/Archives/edgar/data/1535079/000100201413000137/R2.htm";
hURL = InternetOpenUrl( hOpen, Website, NULL, 0, 0, 0 ); //Need to open the URL
ofstream fout("Summer Research testing.txt");
InternetReadFile(hURL, file, file_l, &read);
while (read == file_l)
{
InternetReadFile(hURL, file, file_l, &read);
file[read] = '\0';
cout << file;
fout << file;
}
fout.close();
cout << endl;
InternetCloseHandle(hURL);
return 0;
}
int main()
{
getpage();
}
以上是我的代码。我是初学者。使用Visual Studio 2010编写C ++编程
我一直有错误：“运行时检查失败＃2 - 变量'文件'周围的堆栈已损坏。”
我的想法是我不应该将“* char文件[file_l]; *”与其他文件的长度相同，所以我将其更改为“* char file [file_l + 1]; ”显然，问题解决了，没有更多的错误。能告诉我这是否是解决此错误的正确方法？
此外，该程序没有将网页的所有HTML代码打印到文件“”Summer Research testing.txt“*”中，如我所愿。它没有从第1行打印出来，总是在第209行停止。我已经改变了一些东西，但进展很少。请帮忙。
非常感谢任何帮助！
答案 0 :(得分：1)
将我的评论复制到原帖：
file [read] ='\ 0';如果读取== 100，将导致未定义的行为，因为您在文件数组的末尾访问1。你对此的修正是正确的：
char file[file_l+1];
输出问题：
如果读取大小不是100字节，则通过不输出while循环之前文件中的内容而不显示上次读取时文件数组中的内容，您将丢弃第一次读取。
为了解决这个问题，我稍微重写了你的while循环：
InternetReadFile(hURL, file, file_l, &read);
while (read > 0)
{
// Something was read we should output it now!
file[read] = '\0';
cout << file;
fout << file;
InternetReadFile(hURL, file, file_l, &read);
}
通过将第二个InternetReadFile（）调用移动到输出它的代码之后，我们不再丢弃第一个读取而不输出它。我还将比较改为阅读＆gt; 0修复2个问题：读取少于100个字节和最终读取。
我在代码的更改中包含了两个修复程序：
#include <string>
#include <iostream>
#include <fstream>
#include <windows.h>
#include <wininet.h>
#include <winsock.h>
#include <stdio.h>
#include <stdarg.h>
#pragma comment(lib, "wininet.lib")
using namespace std;
const int file_l = 100;
int getpage()
{
HINTERNET hOpen, hURL;
LPCWSTR NameProgram = L"Webreader"; //LPCWSTR == Long Pointer to Const Wide String
LPCWSTR Website;
char file[file_l+1]; // Add an additional character for '\0'
unsigned long read;
//Always need to establish the internet connection with this function.
if ( !(hOpen = InternetOpen(NameProgram, INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 )))
{
cerr << "Error in opening internet" << endl;
return 0;
}
Website = L"http://www.sec.gov/Archives/edgar/data/1535079/000100201413000137/R2.htm";
hURL = InternetOpenUrl( hOpen, Website, NULL, 0, 0, 0 ); //Need to open the URL
ofstream fout("Summer Research testing.txt");
InternetReadFile(hURL, file, file_l, &read);
while (read > 0)
{
// Something was read we should output it now!
file[read] = '\0';
cout << file;
fout << file;
InternetReadFile(hURL, file, file_l, &read);
}
fout.close();
cout << endl;
InternetCloseHandle(hURL);
return 0;
}
int main()
{
getpage();
}
答案 1 :(得分：0)
阅读不应该是＆gt; = file_l！这意味着你必须写
while (read == file_l - 2)
和
file[read-1] = '\0';
（file_l - 2，因为最后一个字节必须保留为'\ 0'） 我希望你意识到while循环只有在缓冲区“read”（类型为LPVOID而不是char *）已满时才会执行语句。 顺便说一句，你的应用程序几乎完全是用C语言编写的，而不是C ++。
答案 2 :(得分：-1)
#include<iostream>
#include<string>
#include<stdlib.h>
#include<conio.h>
#include<fstream>
#include<string.h>
using namespace std;
class Date
{ protected:
int Day;
int month;
int year;
public:
Date()
{
this->Day=01;
this-> month=01;
this-> year=1990;
}
Date(int _day,int _month,int _year)
{this-> Day=_day ; this-> month=_month; this-> year=_year;
}
void display()
{
cout<<" Day/month/year :"<<Day<<"/"<<month<<"/"<<year<<endl;
}
};
class Login
{
protected:
string UserName;
char password[6];
public:
Login()
{
this->UserName="User";
this-> password[6]='1','2','3','4';
}
Login (string user,char pass[6])
{
this->UserName=user;
this->password[6]=pass[6];
}
void setUser(string a)
{
this->UserName=a;
}
void setPass(char c[6])
{
this->password[6]=c[6];
}
string getuser()
{
return this->UserName;
}
char getPass()
{
return this->password[6];
}
};
class customer
{
protected:
string Name;
string Address;
int age;
int customer_no;
Date DOfReg ;
Date DOfBirth ;
string contact_no;
Login A ;
friend class Admin;
public:
ofstream f;
customer()
{
age=customer_no=0;
}
customer (string _Name ,string _Address,int _age,int _customerNo,Date DOB,Date DOR,string contactNo,Login a)
{
this-> Name=_Name;
this-> Address=_Address;
this-> age=_age;
this-> customer_no=_customerNo;
this-> DOfReg= DOR ;
this-> DOfBirth= DOB ;
this-> contact_no = contactNo;
this-> A=a;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
void setName(string name) { this->Name=name;}
void SetAddress( string add) { this->Address=add;}
void setAge(int Age) { this->age=Age;}
void SetCutomer(int no) {this->customer_no=no;}
void setDOR(Date dor) {this->DOfReg=dor;}
void setDOb(Date dob) { this-> DOfBirth=dob;}
void setContact(string contact) { this-> contact_no=contact;}
void setLogin(Login ID) { this-> A=ID;}
virtual void passchange(Login ID)
{}
virtual bool checkID(Login )
{ return 0;
}
virtual void Reg()
{
}
virtual void updateinfo()
{
}
virtual void Show()
{
}
virtual float paymentType()
{
return 0;
}
};
class Admin
{
protected:
Login A;
public:
ofstream f;
Admin()
{
string Y="Admin"; char z[5]={"4321"};
A.setUser(Y);
A.setPass(z);
cout<<z[5];
}
Admin(Login ID)
{
A=ID;
}
bool checkID(Login ID)
{
if(A.getuser()==ID.getuser()&&A.getPass()==ID.getPass())
{return true;
}
else return false;
}
void Reg(customer& a)
{
int c=0;
cout<<"Enter Name :"<<endl;
getline(cin,a.Name);
cin.ignore();
cout<<"\nEnter Address :"<<endl;
getline(cin,a.Address);
cout<<"\nEnter Age :"<<endl;
cin>>a.age;
a.customer_no=c;
int q,b,d;
do{
cout<<"\nEnter Date Of Regestration "; cout<<"Format: DD/MM//YYYY"<<endl;
cin>>q;
cin>>b;
cin>>d;
if (q<=31&&b<=12&&d<2014)
{ Date DOR(q,b,d);
a.DOfReg = DOR ;break;
}
}while(q>31&&b>12&&d>2013);
do
{
cout<<"\nEnter Date Of Birth "; cout<<"Format: DD/MM//YYYY"<<endl;
cin>>q;cin>>b;cin>>d;
if (q<=31&&b<=12&&d<2014)
{
Date DOB(q,b,d);
a.DOfBirth= DOB ;break;}
else {cout<<"\nWrong Format/Date :"<<endl;}
}while(q>31&&b>12&&d>2013);
cout<<"\nEnter Your Contact No. :"; cout<<"Format: 0322-1234567 "<<endl;
getline(cin,a.contact_no);
cin.ignore();
c++;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
};
class PTCL : public customer
{
protected:
public:
fstream f;
void Reg( )
{
int c=0;
cin.clear();
cin.ignore();
cout<<"\nEnter Name :"<<endl;
getline(cin,Name);
cin.ignore();
cout<<"\nEnter Address :"<<endl;
getline(cin,Address);cin.ignore();
cout<<"\nEnter Age :"<<endl;
cin>>age;
customer_no=c;
int a;
int b;
int d;
//do{
cout<<"\nEnter Date Of Regestration "; cout<<"Format: DD/MM//YYYY"<<endl;
cin>>a;cin>>b;cin>>d;
// if (a<=31&&b<=12&&d<2014)
Date DOR(a,b,d);
DOfReg = DOR; //break;
//else {cout<<"\nWrong Format/Date :"<<endl;}
// }while(a>31&&b>12&&d>2013);
// do
// {
// cout<<"\nEnter Date Of Birth "; cout<<"Format: DD/MM//YYYY"<<endl;
// cin>>a;cin>>b;cin>>d;
// if (a<=31&&b<=12&&d<2014)
// {
//Date DOB(a,b,d);
//DOfBirth= DOB ;//break;
// }
// else {cout<<"\nWrong Format/Date :"<<endl;}
// }while(a>31&&b>12&&d>2013);
cin.clear();cin.ignore(); cout<<"\nEnter Your Contact No. :"; cout<<"Format: 0322-1234567 "<<endl;
getline(cin,contact_no);cin.ignore();
c++;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close(); }
void passchange(Login ID)
{
cout<<"Enter New UserName :"<<endl;
string User;
getline(cin,User);
A.setUser(User);
char c[5];
cout<<"Enter New Password Of 4 letters"<<endl;;
cin>>c[5];
A.setPass(c);
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
bool checkID(Login ID)
{
if(A.getuser()==ID.getuser()&&A.getPass()==ID.getPass())
{return true;
}
else return false;
}
void updateinfo( )
{
int x=0;
cout <<"Which Info You Want to Update"<<endl;
cout<<"1. Name :" << Name<<endl;
cout<<"2. Address :"<< Address<<endl;
cout<<"3. Age :"<< age<<endl;
cout<<"4. Date Of Birth :"; DOfBirth.display(); cout<<endl;
cout<<"5. Contact No :"<<contact_no<<endl;
cout<<endl;
char choice;
do
{
cout<<"choice :"<<endl;
cin>>x;
if (x==1)
{ cout<<"Enter New Name "<<endl;
getline(cin,Name);
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if (x==2)
{
cout<<"Enter New Address "<<endl;
getline(cin,Address);
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==3)
{
cout<<"Update Your Age :"<<endl;
cin>>age;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==4)
{
cout<<"Update Your Birth info:"<<endl;
int a,b,c;
cin>>a;cin>>b;cin>>c;
Date dOb(a,b,c);
setDOb( dOb);
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==5)
{
cout<<"Update Your Contact No: "<<endl;
cin>>contact_no;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else
{
cout<<"Wrong input "<<endl;
}
cout<<"Do Yo Want to Update More (Y/N):"<<endl;
cin>>choice;
}while(choice=='N');
cout<<"Information Updated !! "<<endl;
}
void Show()
{
cout<<"1. Name :" << Name<<endl;
cout<<"2. Address :"<< Address<<endl;
cout<<"3. Age :"<< age<<endl;
cout<<"4. Date Of Birth :"; DOfBirth.display(); cout<<endl;
cout<<"5. Contact No :"<<contact_no<<endl;
cout<<"6. date of registration : "; DOfReg.display();cout<<endl;
cout<<"7. customer no. : "<<customer_no<<endl;
f.open("person.dat",ios::in|ios::out|ios::app);
ifstream f1;
f1.read(reinterpret_cast<char*>(this),sizeof (*this));
}
};
class dell : public customer
{
protected:
string country;
public:
fstream f;
dell()
{
country="USA"; f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
dell(string _Name ,string _Address,int _age,int _customerNo,Date DOB,Date DOR,string contactNo,string count)
{
Name=_Name;
Address=_Address;
age=_age;
customer_no=_customerNo;
DOfReg= DOR ;
DOfBirth= DOB ;
contact_no = contactNo;
country=count;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
bool checkID(Login ID)
{
if(A.getuser()==ID.getuser()&&A.getPass()==ID.getPass())
{return true;
}
else return false;
}
void Reg()
{
string uName; int c=0;cin.ignore();
cout<<"Enter Name :"<<endl;
getline(cin,Name);
cin.ignore();
cout<<"\nEnter Address :"<<endl;
getline(cin,Address);
cout<<"\nEnter Age :"<<endl;
cin>>age;
customer_no=c;
int a,b,d;
do{
cout<<"\nEnter Date Of Regestration "; cout<<"Format: DD/MM//YYYY"<<endl;
cin>>a;cin>>b;cin>>d;
if (a<=31&&b<=12&&d<2014)
{ Date DOR(a,b,d);
DOfReg = DOR ;break; break;
}
}while(a<=31&&b<=12&&d<2014);
cin.clear();
do
{
cout<<"\nEnter Date Of Birth "; cout<<"Format: DD/MM//YYYY"<<endl;
cin>>a;cin>>b;cin>>d;
if (a<=31&&b<=12&&d<2014)
{
Date DOB(a,b,d);
DOfBirth= DOB ;
break;}
else {cout<<"\nWrong Format/Date :"<<endl;}
}while(a<=31&&b<=12&&d<2014);
cin.clear();
cin.ignore();
cout<<"\nEnter Your Contact No. :"; cout<<"Format: 0322-1234567 "<<endl;
getline(cin,contact_no);
cin.clear();
cin.ignore();
cout<<"Create user Name "<<endl;
getline(cin,uName);cin.clear();
cin.ignore();
char p[6];
cout<<"Create PassWord "<<endl; ///// hERE is The Eror " stack around P was corrupted
even if I Input only 1 digit !
cin>>p[6];
A.setPass(p);
A.setUser(uName);
c++;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
void updateinfo( )
{
int x=0;
cout <<"Which Info You Want to Update"<<endl;
cout<<"1. Name :" << Name<<endl;
cout<<"2. Address :"<< Address<<endl;
cout<<"3. Age :"<< age<<endl;
cout<<"4. Date Of Birth :"; DOfBirth.display(); cout<<endl;
cout<<"5. Contact No :"<<contact_no<<endl;
cout<<"6. country : "<<country;
cout<<endl;
char choice;
do
{
cout<<"choice :"<<endl;
cin>>x;
if (x==1)
{ cout<<"Enter New Name "<<endl;
getline(cin,Name);cin.ignore();
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if (x==2)
{
cout<<"Enter New Address "<<endl;
getline(cin,Address); cin.ignore();
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==3)
{
cout<<"Update Your Age :"<<endl;
cin>>age;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==4)
{
cout<<"Update Your Birth info:"<<endl;
int a,b,c;
cin>>a;cin>>b;cin>>c;
Date dOb(a,b,c);
setDOb( dOb);
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==5)
{
cout<<"Update Your Contact No: "<<endl;
cin>>contact_no;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (*this));
f.close();
}
else if(x==6)
{
cout<<"Update Country Name : "<<endl;
cin>>country;
f.open("person.dat",ios::in|ios::out|ios::app);
f.write(reinterpret_cast<char*>(this),sizeof (this));
f.close();
}
else
{
cout<<"Wrong input "<<endl;
}
cout<<"Do Yo Want to Update again (Y/N):"<<endl;
cin>>choice;
}while(choice=='N');
cout<<"Information Updated !! "<<endl;
}
void Show()
{
cout<<"1. Name :" << Name<<endl;
cout<<"2. Address :"<< Address<<endl;
cout<<"3. Age :"<< age<<endl;
cout<<"4. Date Of Birth :"; DOfBirth.display(); cout<<endl;
cout<<"5. Contact No :"<<contact_no<<endl;
cout<<"6. date of registration : "; DOfReg.display();cout<<endl;
cout<<"7. customer no. : "<<customer_no<<endl;
cout<<"8. country : "<<country<<endl;
ifstream f1;
f1.open("person.dat",ios::in|ios::out|ios::app); f1.read(reinterpret_cast<char*>(this),sizeof (*this));
}
};
void main()
{
customer *ptr[100];
string Name;
string Address;
int age;
int customer_no;
Date DOfReg;
Date dofbirth;
string contact_no;
string country;
int c;
int count;
char choice;
string User;
char Pin[6];
int p;
for (int i=0;i<100;i++)
{
cout<<"\n\n********======================*******\n\n"<<endl;
cout<<" \n Welcome To Customer Services "<<endl;
cout<<"\n1. Login for Registerd Member (PTCL/UFONE) "<<endl;
cout <<"\n2. SignUp for Regestration (PTCL/UFONE ) "<<endl;
cout<<"\n3. Search for Regesterd Memebers (Only for Admin) "<<endl;
cout<<"\Choice :"<<endl;
cin>>c;
if (c==1)
{
cin.ignore();
cout<<"\n Enter User Name "<<endl;
getline(cin,User);
//std::cin.ignore();
cout<<"\nEnter Pin of no More than 4 characters"<<endl;
for (int i=0;i<20;i++)
{
Pin[i]=getch();
if (Pin[i]==13)
{
Pin[i]=0;
break;
}
if (Pin[i]!=8)
cout << "*";
}
Login ID(User,Pin); //PassWord Sent Here;
if (ptr[i]->checkID(ID)) //Password match Check
{
cout<<"\n Welcome "<<endl;
cout<<"\n1. for Update Info "<<endl;
cout<<"\n2. for View Info "<<endl;
cout<<"\n3. for Pass change"<<endl;
cout<<"\n Choice "<<endl;
cin>>count;
if (count==1)
{
ptr[i]->updateinfo();
}
else if(count==2)
{
ptr[i]->Show();
}
else if(count==3)
{
ptr[i]->passchange(ID);
}
} //Check ID if bracket
else {
cout<<"\nUserName Or PassWord is Invalid: "<<endl;}
}//c==1 bracket
else if (c==2)
{
cout<<"\nWhoose Customer You Want To be Dell(D) / PTCL(P) "<<endl;
cin>>choice;
if (choice=='D'||'d')
{
ptr[i] = new dell;
ptr[i]->Reg();
}
else if (choice=='P'||'p')
{
ptr[i]=new PTCL;
ptr[i]->Reg();
}
else {cout<<"\nWrong Choice" <<endl;
}
}
}
getch();
}