C++ text document - c++

Question

Its probably an easy answer and i hope its easy to understand my question.
I have a text document that has a lot of lines and several paragraphs
Is there a way to merge all lines into one single line without doing it manually?
The reason i am asking this its because lets say I am searching for a specific word in a document that only has one paragraph.(let say the paragraph has 10 lines) If that word its in that one paragraph its suppose to return paragraph1 accepted. But what my program its doing something weird instead its giving me an output like this:
paragraph1:accepted
paragraph2:accepted
paragraph3:accepted
paragraph4:accepted
paragraph5:accepted
paragraph6:accepted
paragraph7:accepted
paragraph8:accepted
paragraph9:accepted
paragraph10:accepted
This is the code that reads my document
void processParagraph(std::string &paragraph, size_t paragraphNumber)
{
ifstream input;
input.open("data.txt"); //opens the text file with the documents
if (input.fail()) //if the file doesn't open
{
cout << "file not found" << endl;
return;
}
if (isMyWordThere(paragraph)) //if the word im looking its there
cout << "paragraph " << paragraphNumber << ": accepted" << endl;
else // if the word its not there
cout << "paragraph " << paragraphNumber << ": not accepted" << endl;
paragraph.clear(); // reset the paragraph to handle the next one.
std::string line;
std::string paragraph;
size_t paragraphNumber = 0;
while ( getline(input, line) ) // read a LINE
{
if ( !line.empty() ) // paragraph not finished
{
paragraph.append("\n").append(line);
}
else // paragraph finished, because we found an empty line
{
++paragraphNumber;
processParagraph(paragraph, paragraphNumber);
}
}
if ( !paragraph.empty() )
{
processParagraph(paragraph, paragraphNumber);
}
}
Its there a way to merge all lines into one, or a way that i can change my code so it doesnt count lines?
The input file looks like this:(im looking for the word "hello")
hello world
hello everyone
hello All
The output should look like this
paragraph 1: accepted
but what im getting is
paragraph 1: accepted
paragraph 2: accepted
paragraph 3: accepted

Answer 1

You're processing lines not paragraphs.
This will do it:
void processParagraph(std::string &paragraph, size_t paragraphNumber)
{
if (isMyWordThere(paragraph)) //if the word im looking its there
std::cout << "paragraph " << paragraphNumber << ": accepted" << std::endl;
else // if the word its not there
std::cout << "paragraph " << paragraphNumber << ": not accepted" << std::endl;
paragraph.clear(); // reset the paragraph to handle the next one.
}
void processFile(std::string filename)
{
std::ifstream input;
input.open(filename.c_str()); // open file
std::string line;
std::string paragraph;
size_t paragraphNumber = 0;
while ( getline(input, line) ) // read a LINE
{
if ( !line.empty() ) // paragraph not finished
{
paragraph.append("\n").append(line);
}
else // paragraph finished, because we found an empty line
{
++paragraphNumber;
processParagraph(paragraph, paragraphNumber);
}
}
if ( !paragraph.empty() )
{
processParagraph(paragraph, paragraphNumber);
}
}

Answer 2

It seems that you want to split this functionality out into a separate function, that can either take a filename or an open file stream. Then call this function once for each file.