portaccount.txt file wont edit, i cant find where i am going wrong.
Jan 6, 2015 at 11:34am UTC
In this program when I withdraw money I want the PortAccount.txt to change to the new value of when money has been withdrawn, however it changes in the program but the .txt file value isn't changing whatsoever, I think its a problem with the loop but I cant seem to do it, the code that needs repairing is below.
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#include <fstream>
#include <cstring>
#include <string>
#include <iostream>
#include <ctime>
#include <iomanip>
using namespace std;
int main(int argc, char *argv[]) {
const string user= "dan123" ;
const string pass = "password" ;
const string accnum = "2364288" ;
string entnum;
string entpass;
int newb;
int inputted;
int portbalance;
string translist;
int attempts = 0;
int attempt = 0;
int subtramount;
time_t now = time(0);
char * dt = ctime(&now);
fstream bank;
fstream transactions;
bank.open("PortAccount.txt" );
transactions.open("TransList.txt" , ios::app);
cout << "Welcome to Port Wage Manager v1.2" << endl;
cout << "Please enter your account number : " << endl;
cin >> entnum;
while (entnum !=accnum && attempt < 3)
{
cout << "Account number incorrect try again: " << endl;
cin >> entnum;
attempt++;
}
if (attempt < 3)
{
cout << "User Identified, Welcome " << user << endl;
}
else
{
cout << "All attempts failed, system will now close" << endl;
system("Pause" );
return 0;
}
cout << "Please enter password " << user << endl;
cout << "Enter here" << endl;
cin >> entpass;
while (entpass !=pass && attempts < 3)
{
cout << "Access Failed try again: " << endl;
cin >> entpass;
attempts++;
}
if (attempts < 3)
{
cout << "Access Granted " ;
}
else
{
cout << "Three attempts failed, system will now shut down" << endl;
system("Pause" );
return 0;
}
do
{
bank >> portbalance;
cout << "Account Balance is = " << portbalance << endl << endl;
cout << "Enter 1 for Bank Transfer" << endl;
cout << "Enter 2 to display last 5 transactions" << endl;
cout << "Enter 3 to display account details" << endl;
cout << "Enter 4 to exit program" << endl;
cin >> inputted;
switch (inputted)
{
case 1:
cout << "How much do you want to withdraw? : " << endl;
cin >> subtramount;
transactions << " -" << subtramount << setw(5) << " User: " << user << setw(5) << dt;
cout << "Transaction successful, you withdrew " << subtramount << " GBP at " << dt << endl;
portbalance = portbalance - subtramount;
if (portbalance <= 0)
{
cout << "Error, withdrawal cancelled, you have insufficient funds" << endl;
transactions << "Withdrawal attempt cancelled for " << setw(3) << subtramount << "at " << dt;
break ;
}
cout << "Your balance is " << portbalance << endl;
bank << portbalance;
break ;
Jan 6, 2015 at 12:27pm UTC
Have you stepped through it with a debugger? That will help you see if and when it's actually executing line 121.
Jan 6, 2015 at 8:52pm UTC
it all runs smoothly but the txt file wont change its value, theres a way in which you need to get the program to create a file with the same name as the one you read in but still new to C++
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