Question

in c++

QUESTION 4:

Write the code to do the following:

-read input from the keyboard by displaying the message on the screen to ask and read the following information:

* customer ID (string)

* customer name (string)                                                       

* balance (float)

-open output file customer .txt to write

-Write to the output file customer.txt the following information:

                Customer ID – customer name – balance

For example:

1561175753 - James Smith – 1255.25

-close file

QUESTION 5:

-create one notepad file named as data.txt and type the following lines:

1112243433 - Mary Lane – 1250.366

2123312344 – John Smith – 2134.25

1561175753 - James Smith – 1255.25           

-provide the C++ code to open above file data.txt

-Read each line of the file then display on screen

-continue reading and displaying on the screen all the lines until end of the file

-Write: “End of the file data.txt” on the screen

-close data.txt file

Answer 1

Given code is in C++:

Q4.)

#include <iostream>
#include <stdio.h>
#include <string>
#include <fstream>          //this header is used whenever we want to work with files.

using namespace std;

int main()
{
    string id, name, surname;                        //declaring id, name and surname strings.
    float balance;                                   //declaring the balance variable.
    cout<<"Enter the customer ID: ";                 //taking inputs for the id, name, surname and balance.
    cin>>id;
    cout << "Enter the customer name: ";
    cin >> name >>surname;
    cout << "Enter the balance: ";
    cin >> balance;
    

    ofstream myfile("customer.txt");        //create and open the customer.txt file

    myfile<<id<<"-"<<name<<" "<<surname<<"-"<<balance;        //writing to the file.

    myfile.close();                         //closing the file after writing to it.
    return 0;                               //terminating the program.
}

Output:

customer.txt:

Q5.)

#include <iostream>
#include <fstream>                   //this header is used whenever we want to work with files.
#include <stdio.h>

using namespace std;

int main()
{
    string text;                    //declaring a text string.

    ifstream readfile("data.txt");          //opening the file data.txt into readfile.

    while(getline(readfile, text))          //reading each line of the file into text string.  
    {
        cout<<text<<endl;                   //printing out the text string.
    }

    cout<<"End of the file data.txt";       

    readfile.close();                       //closing the file after reading it.
    return 0;                               //terminating the program.
}

Output:

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