#C PROGRAM TO FIND WORD IN FILE HOW TO#

I shouldn't need help with the sorting, but I don't know how to get the word count from each of the text files or put them into an array. I am also to bring each of the words from all three files and put them into a 2D array (an array of string-arrays), then use some sort of sorting method on them.

I need to merge three text file with the format: word1 It is in C and I have very, very little experience with C. When it goes out of scope, the destructor will run which will close the file if it's still open.I need some help with a program that I am writing for my Systems Programming class.

For example, if you're moving a file between file systems by copying its content, then deleting the original, you want to do everything you can to ensure the copy completed successfully (including successful closing) before you remove the original. Unless you plan on doing actual error handling, it's best to just let the scope of the file handle the close of it. There are a few cases where it makes sense to manually close a file. When it can, it will just do a simple subtraction. (Technically it doesn't always actually iterate along the iterators. Since std::distance runs the length of the first iterator until the second, this will just read as many tokens as it can and return the distance (i.e. The specifics of this are a bit advanced, but the basic idea is that istream_iterator is a simple wrapper around operator> and that it performs extractions until it no longer can. Std::size_t count = std::distance(std::istream_iterator(fs), If you wanted to leverage the standard library, you could actually do this much shorter: ifstream fs(.) Return values are always required in other functions.) That clearly signals that the program can't fail. If a program can't fail, it's fairly common to omit a return code. Since you're only using one parameter and there's no real advantage to using a user prompt, I would take the filename as an argument to the program rather than reading it from the console. Imagine if programs like grep, cat or wc did that.

It's a bit of a strange behavior to have the program hang until you hit a key. Rather than using cin.get(), I would just run the application inside of a console. (Although I'm only familiar with linux-maybe no break is normal under Windows.) It's rare to have a program output without a trailing newline. I would put a newline after the count output. The more natural way to write that loop is: while (inFile > word) This means that your last read can silently fail. eof is not reached until after the end of file is attempted to be read past. (for example, declare count about the while loop rather than at the top).Īn eof loop control does not work the way you think it does. This isn't one of those cases though.ĭeclare variables as close to use as possible. Anything that might destroy the user's data calls for extraordinary measures to assure safety.

There are a few cases where it makes sense to manually close a file.

Std::cout << 'Word count: ' << std::distance(in, end)

#C PROGRAM TO FIND WORD IN FILE CODE#

I'd write the code using the standard distance algorithm, something like this: #include I'd also strongly prefer to take command line arguments over prompting for input at run time.

Generally let the destructor handle destruction (e.g., let the filestream object close when it goes out of scope) 1.

Prefer to fully initialize variables at creation (e.g., pass file name when you create a filestream object).

You should use standard algorithms when they're applicable (as they are here).

You should never use while(!inFile.eof()).

You should learn to not use using namespace std.

C program to find word in file