Question

HW_6c - Append data to existing data in a file.

1. Include the following in the main.cpp file.

1. Prompt the user to enter 3 more numbers, then read the numbers and write them to

            the results.txt file.

• Include code so that when the data is written to file, it is appended (added on to the

    end of the existing data).

1. Open the results.txt file and verify that the file was written successfully.

/* OUTPUT

Here are the numbers in the file:

3

4

5

Enter 3 more numbers:

6

7

8

The numbers have been written (appended) to results.txt.

Press any key to continue . . . */

Please make the code based on C++, and make a description for each code.

Answer 1

Here is the solution. Please do upvote thank you.

#include<iostream>
#include<fstream>
#include<bits/stdc++.h>
using namespace std;
int main()
{
int num,i;
ofstream fout;
cout<<"Add 3 more numbers"<<endl;
fout.open("sample.txt",ios::app);
assert(!fout.fail());
for(i=0;i<3;i++)
{
cin>>num;
fout<<num<<endl;
}
fout.close();
assert(!fout.fail());
return 0;
}

Before writing:

After adding 3 numbers: