Input stream into c program -

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i have file following values:

12,23 2 90

i have linked list structure has function add values it:

add_value(int x).

my end goal direct file cprog , have values (ints) added structure. 

file | cprog

but can't figure out how read each digit, add linked list, , move onto next digit , add too?

thanks

int x, status;  while((status=scanf("%d", &x))!=eof){     if(status == 1)         add_value(x);     else         fgetc(stdin);//drop 1 character }

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