wc

wc (short for word count) is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. The program reads either standard input or a list of computer files and generates one or more of the following statistics: newline count, word count, and byte count. If a list of files is provided, both individual file and total statistics follow.

☝🏽wikipedia

TODO

• support the command line option -c and outputs the number of bytes in a file.
• support the command line option -l that outputs the number of lines in a file.
• support the command line option -w that outputs the number of words in a file
• support the command line option -m that outputs the number of characters in a file. If the current locale does not support multibyte characters this will match the -c option.
• support the default option - i.e. no options are provided, which is the equivalent to the -c, -l and -w options.
• support being able to read from standard input if no filename is specified.

How to run the program

make          # create executable
./bin/wc -h   # display manual or help message
make clean    # always clean after yourself 😃

For reference: Coding Challenge # 1 - Build your own wc.