read two bytes at once from a byte array in C

Question

Let's say I have the following array of bytes:

uint8_t barr[4] = {0xCE, 0xCE, 0xCE, 0xCE};

Given an index n, I want to be able to read two bytes:

uint16_t d16 = barr[0];

And have d16 be equal to

0xCECE

Perhaps there is a function in the standard library that can perform such task?

Answer 1

A piece of cake:

memcpy(&d16, barr + n, sizeof(d16));

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Don't try to convert pointers or use unions. Those either are undefined behaviors, or may trip trap representations. memcpy() is the "canonical" solution (as the C++ boost library does).