C++ program?

Write a C++ program that opens a text file with the name "Hello.txt", creates a second file "Hello1.txt". Read the content of Hello.txt and copy its contents to Hello1.txt " replacing every space character ' ' with a '_' character. Thus the text "The quick brown " in Hello.txt should become "The_quick_brown_" Close both files. Remember to include string and fstream. You will have to use the get function of your ifstream object.





please please help. I know how to do this question:





Write C++ code to open a file with the name Hello.txt, store the message


“Hello, World!” in the file, and close the file. Then open the same file


again and read the message into a string variable. Close the file again.





ofstream output_data;


output_data.open("Hello.txt");


output_data %26lt;%26lt; "Hello, World!";


output_data.close();


ifstream input_data;


input_data.open("Hello.txt");


string s;


getline(input_data, s);


input_data.close();





But I cannot get this one!

C++ program?
The get() version


ifstream input_file("Hello.txt");


ofstream output_file("Hello1.txt");





ch = input_file.get();


while (!input_file.eof())


{


if (ch == ' ')


ch = '_';


output_file.put(ch);


ch = input_file.get();


}


input_file.close();


output_file.close();
Reply:Read the file in as an entire block:





// read a file into memory


#include %26lt;iostream%26gt;


#include %26lt;fstream%26gt;


using namespace std;





int main () {


int length;


char * buffer;





ifstream is;


is.open ("test.txt", ios::binary );





// get length of file:


is.seekg (0, ios::end);


length = is.tellg();


is.seekg (0, ios::beg);





// allocate memory:


buffer = new char [length];





// read data as a block:


is.read (buffer,length);


is.close();





cout.write (buffer,length);





delete[] buffer;


return 0;


}





Then iterate through each character in the buffer, replacing " " with an _