`memset` (C/C++)

First introduced to this through Competitive Programming.

memset is a C function that sets a block of memory to a particular byte value.

Typical Usage

memset(dp, 0, sizeof(dp));

Danger

Note that this generally works with 0, if you try other values than 0, it won’t work.

This is because memset works on a per-byte basis, so when you give it a non-zero value, it will apply that value to each byte in the block of memory, not to the elements themselves.

fill (C++)