What is the difference between memcpy() and strncpy() given the latter can easily be a substitute for the former?

Question

What is the significant difference between memcpy() and strncpy()? I ask this because we can easily alter strncpy() to copy any type of da

Answer 1

Take for example these numbers in your array:

 brr[2]={512,44};

The least significant byte of the first number brr[0] is 0 (512 is 0x200) which would causes ¹⁾ strncpy to stop copying. strncpy does not copy characters that follow a null character.

_{1) To be pedantic (see comments), this holds provided that the implementation has sizeof (int) > 1 .}