Thread: the code I wrote gives me an error once it compiles. I am unable to submit a proper o

Try "copy as text" in your IDE, or "paste as text" in your browser.

So the code we see isn't that awful mess of unindented italics.

Compiles just fine for me, no data files so

Code:

#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

int main()
{
    ifstream myfile ("C:\\Users\\sshaw2\\Documents\\Untitled3.txt");
    ofstream outfile ("C:\\Users\\sshaw2\\Documents\\output.txt");
    
    int count = 0;
    int x= 0;
    float y=0.0;
        
    string lastName;
    string firstName;
    string rental;
    string balance;
        
    std::vector<string> myvector;
    string line;
    getline(myfile,line);
    outfile<<line<<endl;
    
    while(getline(myfile,line))
    {
        myvector.push_back(line);
    }
    sort(myvector.begin(),myvector.end(),greater<string>());

    // variable to to store the data
    float totalbalanceDue =0.0;
    int highestRental = 0;
    float highestDue = 0.0;
    string customerName = ""; // for highest rental customer
    string customerName1 = ""; // for hishest due customer

    while(!myvector.empty())
    {
        string line = myvector.back();
        
        outfile<<line<<endl;
        
        myvector.pop_back();
        
        istringstream iss(line);
            
        iss>>lastName;
        iss>>firstName;
        iss>>rental;
        iss>>balance;
    
        stringstream ss1(rental);
    
        ss1>>x;
    
        stringstream ss2(balance);
    
        ss2>>y;
    
        //logic for customer having highest dues
        if(y>highestDue)
        {
            highestDue = y;
            customerName1 = firstName+ " " + lastName;
        }
        else if(y==highestDue)
        {
            customerName1 = customerName1 + ", " +firstName+" "+lastName;
        }
    
        // logic for customer having highest rental
        if(x>highestRental)
        {
            highestRental = x;
            customerName = firstName+ " " + lastName;
        }
        else if(x==highestRental)
        {
            customerName = customerName + ", " +firstName+" "+lastName;
        }
    } // END WHILE
    
        outfile <<endl;
        outfile <<endl;
        
        outfile <<"Total Balance Due for file:";
        outfile <<totalbalanceDue<<endl;
    
        outfile <<"Customer with highest number of rental days: ";
        outfile <<customerName<<endl;
    
        outfile <<"Customer with highest balance due are: ";
        outfile <<customerName1;
    
    myfile.close();
    outfile.close();
return 0;
}

compile results

Code:

g++  -std="gnu++11"  -Wall -o "temp" "temp.cpp" (in directory: /home/userx/bin)
temp.cpp: In function 'int main()':
temp.cpp:39:7: warning: unused variable 'count' [-Wunused-variable]
   int count = 0;
       ^
Compilation finished successfully.

strcmp sort it alphabetically.

post a small sample of your data file, if it is really big, if not post all of it. just need a little bit to work with. not too little though. how's that for using an that word little , arbitrarily?

Code:

Sorting – Straight Selection Sort
 
Begin from the first element, taking i=0 to n-1.
Find the minimum number in the first scan.
Interchange ith element with the minimum number.
Start searching minimum element again from i+1 to n.
The number of scans is equal to the number of elements.
Stop scan when the last element remains to be replaced with min.
Display the output which is now sorted. 

for that number part, using strcmp and its return value how would you set that up to move them accordingly. knowing the alphabet

Selection sort - Wikipedia

Code:

Return Value from strcmp()

      
Return Value
Remarks

0
if both strings are identical (equal)

negative
if the ASCII value of first unmatched character is less than second.

positive integer
if the ASCII value of first unmatched character is greater than second.

simple insertion sort.

Insertion Sort - GeeksforGeeks

and

Insertion sort - Wikipedia

same thing using strcmp