Counting letters in an array. C++

Question

Sorry if the wording/terminology is not accurate as possible, I'm relatively new to this coding stuff.

So I have a .txt file named somefile.txt the contents of this file is as follows:

The file was loaded as follows:

#include <iostream>
#include <istream>
#include <fstream>
#include <string>
int main (){
ifstream inputfile;
inputfile.open("somefile.txt");
string contents;
while(!inputfile.eof())
    {
        getline(inputfile, contents);
        cout << contents;
    }
inputfile.close();
}

What I now want to do is to find out how many letters there are in this file and other files in the same format and of similar .txt files. For example, the somefile.txt has 2 letters that can be recognized by humans when they see the files contents. Is there a way for the computer to know/ calculate how many letters there are. I was also hoping that this could be done in a separate function if possible.

Hopefully this clears up my poor writing from before. Thank you again

I meant something with both letters and numbers in the same array. — ProNoobSry, Mar 29 '16 at 21:38
@ProNoobSry How do you actually declare that array in your code? If you have a `std::string` use `std::istringstream` to parse it further. — πάντα ῥεῖ, Mar 29 '16 at 21:46
@M.M Thank you. If you don't mind explaining, is there a particular reason of using while(getline(....)) instead of while(!...eof) ? — ProNoobSry, Mar 29 '16 at 23:57
yes, [see this question](http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong) — M.M, Mar 30 '16 at 00:04

score 2 · Accepted Answer · answered Mar 29 '16 at 21:36

2

Look at ctype.h and use isletter or isalpha, etc. http://www.cplusplus.com/reference/cctype/

answered Mar 29 '16 at 21:36

nicomp

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Counting letters in an array. C++

1 Answers1