It has been a long while since I did any C programming. I am trying to read the utmp.h header on RHEL vs 5 but I am getting a little lost with the branching. I wanted to write a simple program that would create a struct of type utmp and then would print out each element name and type. Such as, "the first element is called ut_type and is an integer." I have:
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#include <stdio.h>
# include <utmp.h>
int main(int argc, char *argv[]) {
struct utmp ut;
int size;
size = sizeof(ut);
printf ("Size = %d\n", size);
}
This gives me the size of the structure, but I'd like to find each element. Is this possible?
This gives me the size of the structure, but I'd like to find each element. Is this possible?
Nope, not in C; it's a pure compiled language and names only have a meaning
during compile time. During runtime an actual struct is just a sequence of bytes
(chars) that you treat as a struct, i.e. the bare metal doesn't care less.
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