What arguments does a c application like snmpget take?

I want to call snmpget.c from another c program in the same project. For that reason I have changed the main() into a function say get_func() which takes the same arguments. But i an not sure how to give the arguments namely argv[0] My arguments look something like this:

char *argstr[]=
{
        "v",
        "1",
        "c",
        "public",
        "-Ovq",
        "192.168.1.1",
        "ifInOctets.7",
        "ifOutOctets.7",
        NULL
};

And then

i = get_func(10, argstr);

1.Should argv[0] be the app name or path?

2.Is using char *argstr[] correct for c?

3.snmpget is not taking these arguments correctly. What could the reason be?

It works correctly with the same args in command.

Solution

Your get_func expects the arguments starting at argv[1], so your argstr argument should not start with "v" but with something else (e.g. the programme name or just an empty string if get_func doesn’t use it).
Yes. But be aware that your argstr contains non-modifiable strings, if get_func wants to modify them, you can use compound literals
```
char *argstr[]=
{
        (char []){ "v" },
        (char []){ "1" },
        /* etc */
        NULL
};
```
See 1. and 2. Additionally, argc is incorrect (must be sizeof argstr/sizeof *argstr - 1, which is 8 in your case, not 10).

Not directly an answer to your question, but consider redesigning this (depends on what exactly you’re currently doing, however). For example, write a function accepting a structure where the different options are stored (already parsed and validated) and change the old main from snmpget.c to a function only scanning and validating arguments, initializing such a structure object, and calling this function. And then, perhaps split your files into snmpget.c, snmpget_main.c, another_c_file.c (with better names, of course) and link both user interface implementations against the object file of snmpget.c.