Store an int in a char array?

Question

I want to store a 4-byte int in a char array... such that the first 4 locations of the char array are the 4 bytes of the int.

Then, I want to pull the int back out o

Answer 1

Unless you care about byte order and such, memcpy will do the trick:

memcpy(a, &har, sizeof(har));
...
memcpy(&har2, a, sizeof(har2));

Of course, there's no guarantee that sizeof(int)==4 on any particular implementation (and there are real-world implementations for which this is in fact false).

Writing a loop should be trivial from here.