Username and Password Registration System
Write a C++ Program for Username and Password Registration System using File Handling. Here’s simple Program for Username and Password Registration System using File Handling in C++ Programming Language.
Below is the source code for C++ Program for Username and Password Registration System using File Handling which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
/* C++ Program for Username and Password Registration System */ #include<iostream> #include<fstream> using namespace std; struct mail { char un[50]; // user name char pd[50]; // passsword void reg(int); } obj[5]; void mail::reg(int k) { int i=k; cout<<"\nEnter user name :: "; cin>>un; cout<<"\nEnter password :: "; cin>>pd; ofstream filout; filout.open("C:\\Users\\acer\\Documents\\registration.txt",ios::app|ios::binary); if(!filout) { cout<<"\nCannot open file\n"; } else { cout<<"\n"; filout.write((char *)&obj[i],sizeof(mail)); filout.close(); } cout<<"\n...........You are now registered.......... \n\n"; } // end of sign up or register func int main() { int t; cout<<"\nEnter Registration Details for User 1 :: \n"; obj[0].reg(0); cout<<"\nEnter Registration Details for User 2 :: \n"; obj[1].reg(1); cout<<"\nEnter Registration Details for User 3 :: \n"; obj[2].reg(2); mail obj2; ifstream filein; filein.open("C:\\Users\\acer\\Documents\\registration.txt",ios::in|ios::binary); if(!filein) { cout<<"\nUnable to open file to read\n"; } else { cout<<"\nRegistered Details of All Users :: \n"; filein.read((char *)&obj2,sizeof(obj2)); while(filein) { cout<<"\nUsername :: "<<obj2.un<<"\nPasswword :: "<<obj2.pd<<"\n"; filein.read((char *)&obj2,sizeof(obj2)); } //filein.close(); } return 0; }
OUTPUT : :
/* C++ Program for Username and Password Registration System */ Enter Registration Details for User 1 :: Enter user name :: CodezClub Enter password :: codezclub.com ...........You are now registered.......... Enter Registration Details for User 2 :: Enter user name :: John Enter password :: Macene ...........You are now registered.......... Enter Registration Details for User 3 :: Enter user name :: Max Enter password :: Payne ...........You are now registered.......... Registered Details of All Users :: Username :: CodezClub Passwword :: codezclub.com Username :: John Passwword :: Macene Username :: Max Passwword :: Payne Process returned 0
Above is the source code for C++ Program for Username and Password Registration System which is successfully compiled and run on Windows System.The Output of the program is shown above .
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Please explain the above code with detailed explanation.
christian manlanot