creating a filter program for chaining

[logan_]

Hello hello
This is my first visit to this site but it's amazing.....I've searched the FAQ and scanned quickly through all the current threads but I couldn't find this topic anywhere. I want to write a series of programs that work as simple filters. IE. Enter a string and output only the number of characters in the string. I would like to be able to feed the data fromt the keyboard or route the input from a file. Is there anything special in the way the input has to be read or written. Can it simply be a scanf(), fscanf() [printf() or fprintf() for output] statements and chained from the command line....sorry to be rattling on...

[kpw]

> IE. Enter a string and output only the number of
> characters in the string. I would like to be able to
> feed the data fromt the keyboard or route the input
> from a file.

With input from a keyboard, you can simply use a counter variable and a getchar():

counter=0;
while ( (c=getchar()) != EOF )
counter++;

With input from a file, this can be done just as easily with a counter variable and a getc() function:

counter=0;
while ( (c=getc(fp)) != EOF )
counter++;