Hi everyone. I did a program in C++ and in my program in need to detect some flags that are given by arguments. I did it in a very inelegant way and i wasted more than 100 lines to do that. So i'm asking if someone know some algorithm or function or have some examples how to do this ?
Thank you very much
That would depend a lot on:
1. What environment? OS, compiler, etc?
2. What style and parameters are the flags/options?
3. What is the consequence of each flag/option? Do the flags have arguments to (e.g -x=3 or -outfile=foo.txt)?
Give some examples of what a command line for the program would look like, and a list of all options [or at least a list of a few typical ones]
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Mats
Compilers can produce warnings - make the compiler programmers happy: Use them!
Please don't PM me for help - and no, I don't do help over instant messengers.
For example this line:
./program -n 34 56 -i -f
I'm programming in Linux
So presumably you would walk through argv; if argv[i][0] is a hyphen, do a switch on argv[i][1] and process that character. You'd have to use atoi or strtol to get numbers out of "34" and "56", of course.
You may also want to look at "man getopt" - it's a function written specifically to support option parsing.
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Mats
Compilers can produce warnings - make the compiler programmers happy: Use them!
Please don't PM me for help - and no, I don't do help over instant messengers.
You don't want to look at my google search history for the last five minutes because I couldn't think of the name.Originally Posted by matsp
Thanks.
And there's Boost.ProgramOptions, which is IMO far superior to getopt.
All the buzzt!
CornedBee
"There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
- Flon's Law
I'll second CornedBee!
