adding a newline to file in C++

Question

Can any body help me with this simple thing in file handling?

The following is my code:

#include
#include
using namesp         


        

Answer 1

First, you need to open the stream to write to a file:

ofstream file; // out file stream
file.open("anish.txt");

After that, you can write to the file using the << operator:

file << "hi this is first program i writer";

Also, use std::endl instead of \n:

file << "hi this is first program i writer" << endl << "this is an experiment";

Answer 2

#include <fstream>
using namespace std;

int main(){
 fstream file;
 file.open("source\\file.ext",ios::out|ios::binary);
 file << "Line 1 goes here \n\n line 2 goes here";

 // or

 file << "Line 1";
 file << endl << endl;
 file << "Line 2";
 file.close();
}

Again, hopefully this is what you want =)

Answer 3

// Editor: MS visual studio 2019
// file name in the same directory where c++ project is created
// is polt ( a text file , .txt)
//polynomial1 and polynomial2 were already written
//I just wrote the result manually to show how to write data in file
// in new line after the old/already data
#include<iostream>
#include<string>
#include<fstream>
using namespace std;
int main()
{
    fstream file;
    file.open("poly.txt", ios::out | ios::app);
    if (!file) {
        cout << "File does not exist\n";
    }
    else
    {
        cout << "Writing\n";
            file << "\nResult: 4x4 + 6x3 + 56x2 + 33x1 + 3x0";  
    }
    system("pause");
    return 0;
}

**OUTPUT:** after running the data in the file would be
polynomial1: 2x3 + 56x2-1x1+3x0
polynomial2: 4x4+4x3+34x1+x0
Result: 4x4 + 6x3 + 56x2 + 33x1 + 3x0
The code is contributed by Zia Khan