The attached account info file consists of a triple of information. A valid acco

Question

The attached account info file consists of a triple of information.

A valid account number

The current account balance

The maximum account balance

Using the account info file write a program using appropriate functions that lets a user:

Enter a given account number

Enter a charge amount (positive values only)

This program then validates the account number and the amount. Then it determines if the current requested charge will exceed the account balance.

if a valid account, print a validation message

If a valid amount then print if the charge is accepted

if anything is invalid print a message indicating what is wrong.

Store the values in the file in appropriate vectors. once stored in the vectors, use the selection sort method to sort the array and use a binary search method to find the account number.

Do not use the algorithms library for either the sort or search, write the functions yourself.

txt file

Explanation / Answer

C++ program:

#include <iostream>
#include <fstream>
using namespace std;
int binarySearch(int accNumber,int accNum[],int n)
{
   int first = 0;
   int last = n-1;
   int middle = (first+last)/2;
   while (first <= last)
   {
       if(accNum[middle] < accNumber)
       {
           first = middle + 1;

       }
       else if(accNum[middle] == accNumber)
       {
           return middle;
           break;
       }
       else
       {
           last = middle - 1;
       }
       middle = (first + last)/2;
   }
   if(first > last)
   {
       return -1;
   }
}

int main()
{
   //declare vectors to store data
   int accNum[20];
   double currBalance[20];
   double maxAccBalance[20];
  
   int n=0;
   //opening the file , if it exists
   ifstream infile("info.txt");
   if(!infile)
   {
       cout<<"Please provide input file info.txt";
       exit(0);
   }
   //reading the file info.txt
   while(!infile.eof())
   {
       cin>>accNum[n]>>currBalance[n]>>maxAccBalance[n];
       n++;
   }
  
   //selection sort
int minAccLoc;
for (int i = 0; i < n; i++)
{
minAccLoc = i;

for (int j = i + 1; j < n; j++)
{
if (accNum[j] < accNum[minAccLoc])
{
minAccLoc = j;
}
}

//Swap the values
int temp=accNum[i];
   accNum[i]=accNum[minAccLoc];
   accNum[minAccLoc]=temp;
  
   double t=currBalance[i];
   currBalance[i]=currBalance[minAccLoc];
   currBalance[minAccLoc]=t;
  
   t=maxAccBalance[i];
   maxAccBalance[i]=maxAccBalance[minAccLoc];
   maxAccBalance[minAccLoc]=t;
}  
int accNumber;
double charge;
while(1)
{
   cout<<endl<<"Enter the user account number: ";
   cin>>accNumber;
   int loc=binarySearch(accNumber,accNum,n);
   if(loc==-1)
   cout<<endl<<"Invalid account number";
   else
   {
       cout<<endl<<"Valid account number";
       cout<<"Enter the current requested charge : ";
       cin>>charge;
       if(charge>currBalance[loc])
       cout<<endl<<"Requested charge is not accepted since it exceeds account balance.";
       else
       {
           cout<<endl<<"Requested charge is accepted.";
           currBalance[loc]-=charge;
       }
   }
}
  
}

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