Question

I wrote a little program which prints help information if argument is not passed.

If I run the app without arguments

./myApp 

it prints

./myApp --filename=file

I know that argv[1] holds the first parameter, but I can’t figure out how to fetch the text after “=” ie the name of file.

Answer 1

Instead of parsing the string manually, you should rather use getopt() or getopt_long().

They do the dirty work for you and behave in the way people expect it (while self-written parsers are sometimes confusing – some use --arg value, others --arg=value, some even use -arg value)