Hello guys!.

Well, my problem is:

I have a function on a self library and I want to call the function when I write the function name with the keyboard.

example:

----------- Function library -----------
void functionA(char c)
{
if(c='a')
printf("Hello World!");
else
printf("Goodbye!");
}

----------- Main program -----------
void main(void)
{
char fname[20];

printf(">> ");
scanf("%s",fname);
????????????????????????
????????????????????????
}

I need to know the code from "??????????" to do this:

Simulating...(On terminal)

>> functionA a (pushing key enter)
Hello World!

>> functionA (pushing key enter)
Goodbye!

Thanks you.

PD: Sorry for my bad english.

I think that ‘‘man dlopen’’ could enlighten you. dlopen opens .so library, dlsym takes result of dlopen and a function name and returns function address.

A simpler alternative to dlopen is linking to the library and using the function directly (the symbol resolution is performed automatically instead of manually).

So something like this:
And then, during linking, you would specify that your executable be linked with the library (either static or shared).

thanks guys!.

But I use static libraries...

osor's advice works in this case, too, but you will also have to manually select function by name.
You will still need and when you compile something like will do.