即时通讯试图创建一个登录程序,但发生了错误 [英] im trying to create a login program but an error ocuured
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问题描述
#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();
}
推荐答案
我认为这行
bool char filename[] = "myfile.txt";
只能是
char filename[] = "myfile.txt";
尝试以下代码:
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();
}
干杯,
jmrosendal
Cheers,
jmrosendal
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