Writing to a file in C++ - c++

Question

I'm trying to make a program that will get the user input of a new file name, create the file, and write to it. It works but it will only write the first word of the string to the file. How can i get it to write the full string? thanks.
#include "stdafx.h"
#include <fstream>
#include <iostream>
#include <string>
using namespace std;
int main()
{
for (;;)
{
char *myFile = " ";
string f = " ";
string w = " ";
cout <<"What is the name of the file you would like to write to? " <<endl;
cin >>f;
ofstream myStream(f,ios_base::ate|ios_base::out);
cout <<"What would you like to write to " <<f <<" ? ";
cin >>w;
myStream <<w;
if (myStream.bad())
{
myStream <<"A serious error has occured.";
myStream.close();
break;
}
}
}

Answer 1

According to this post, you should consult this reference to use a method like getline().
Also, when you are writing out I recommend that you flush the output (cout.flush()) before ending the program, especially in this case, since I presume you are ending the program with a ctrl-C break.
In formulating a suggestion, I will read data into char*, and convert them to "string" in case you will use them elsewhere in your program.
I tested this code in MS Visual C++ Express.
#include "stdafx.h"
#include <fstream>
#include <iostream>
#include <string>
using namespace std;
int main()
{
for (;;)
{
char *myFile = new char[200]; // modified this line
//added this line
char *myInput = new char[200];
string f = " ";
string w = " ";
cout << "What is the name of the file you would like to write to? " << endl;
cin.getline(myFile, 200);//modified this line
f = (myFile);//added this line
cin.clear(); //added this line
ofstream myStream(f, ios_base::ate | ios_base::out);
cout << "What would you like to write to " << f << " ? ";
cin.getline(myInput, 200);//edited this line
w = string(myInput);//added this line
myStream << w;
myStream.flush();//added this line
if (myStream.bad())
{
myStream << "A serious error has occured.";
myStream.close();
break;
}
delete myFile;
delete myInput;
}
}

Answer 2

You have to use std::getline() to read the entire line:
std::getline(std::cin >> std::ws, w);
The >> std::ws part gets rid of leading whitespace which is needed because the newline left in the stream from the previous extraction will prevent std::getline() from fully consuming the input.
When inserting data into the stream you need to make sure it gets flushed (because, as the other answer said, you're probably using Ctrl+C to terminate the program and you may not see output during the program run). You can use the std::flush manipulator to flush the output:
myStream << w << std::flush;

Answer 3

cin<<w; cin would stop consuming input character when it encounter whitespace tab and other unseeable characters.
you should probably use std::getline() instead.
take a look at this page for ref.
http://en.cppreference.com/w/cpp/string/basic_string/getline
Or you can use manipulator to not skip whitespace.