im trying to create a login program but an error ocuured

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C++

#include <iostream>
#include <fstream>
#include<string>
#include<conio.h>

using namespace std;

int main() {
    string username, password;
    bool    char filename[] = "myfile.txt";

    ofstream Login(filename, ios::app);

    cout<<"Enter username: ";
    getline(cin, username);

/*---the error start here(could not convert `username' to `bool' ) */
      while(username entered by user == username found in file)
{
          cout<<"Username already exist!! Enter username: ";
          getline(cin, username);
      }


    Login<<username<< " ";
    cout<<"Enter password: ";
    getline(cin, password);
    Login<<password<<"\n";

    Login.close();
    return 0;
    getch();
}

Posted 11-Jan-12 18:19pm

reikuxian

Updated 11-Jan-12 18:21pm

RaisKazi

v2

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2 solutions

Solution 1

I think the line

bool char filename[] = "myfile.txt";

must be

char filename[] = "myfile.txt";

only

Posted 11-Jan-12 18:23pm

agent_suwastica

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agent_suwastica · Accepted Answer · 2012-01-11T18:37:00

Try this code:

#include <iostream>
#include <fstream>
#include<string>
#include<conio.h>
 
using namespace std;
 
int main() {
string username, password, usernameFromFile;
char filename[] = "myfile.txt";
 
ofstream Login(filename, ios::app);
ifstream ViewLogin(filename);
 
cout<<"Enter username: ";
getline(cin, username);
getline(ViewLogin, usernameFromFile);
 
while(username == usernameFromFile)
{
cout<<"\nUsername already exist!! Enter username: ";
cin>>username;
}
 
 
Login<<username;
cout<<"Enter password: ";
getline(cin, password);
Login<<password<<"\n";
 
Login.close();
return 0;
getch();
}

Cheers,
jmrosendal