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Examples, usage, help in C++ program

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# 1  
Old 07-10-2012
Examples, usage, help in C++ program
I have written a C++ program to perform raytracing and would want to write some functions to help the user: examples, usage, help

I am wondering how this is done. Would I just put some functions in the main program?
# 2  
Old 07-10-2012
How to do it depends on what you already have and what exactly you want to do.

You're vague on both, so it's difficult to help.
# 3  
Old 07-10-2012
Here's an example of how you'd do it in C:


Code:
int main(int argc, char *argv[])
{
        int n;
        for(n=1; n<argc; n++)
        {
                if(strcmp(argv[n], "--help") == 0)
                {
                        print_help();
                        exit(0);
                }
        }
}

# 4  
Old 07-12-2012
That's what I've done. My question is where to put the function print_help();

I do have a few functions and they are quite long. They involve
sending information to the user. I have now put them in another
file.
# 5  
Old 07-12-2012
Wherever you like. You can put them in the same file, or not. Just make sure to have headers for them if you put them in a different file.
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