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hi i need help with this. I want to make a database where the user logs on and types in a name and password. Then their input is checked with an external text file and it compares "strings". So if they tpye bob it looks through the file and if it finds bob, it continues etc... The problem is i cant find how to check for strings. Should it be like bob jim matt and look at each line by line?Please give me any ideas or solutions to fix this problem thanks.

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String comparison

char* strings, use strcmp
std::strings, use ==

Another (untested) possibility
(your example doesn''t contain passwords, neither does mine)

  
#include <iostream>
#include <fstream>
#include <set>
#include <iterator>

std::ifstream ifs( "login.txt" ); // The login file

std::set<string> login_table; // The login table


login_table.assign( std::istream_iterator<string>( ifs ), std::istream_iterator<string>() ); // load the file


std::string login; // the input

std::cin >> login; // read the input


if( login_table.find(login) == login_table.end() ) // check the input

std::cout << login << " not found." << std::endl; // fail

else
std::cout << "You may proceed" << std::endl; // succeed



The rest is up to you.

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Stolen from Magmai Kai Holmlor, who held it from Oluseyi, who was inspired by Kylotan...

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