How do you do the following in C$++?$

$1.$allocate an $8-$byte number type and initialize its value to $4\mathrm{.}234\mathrm{.}334?$

$2.$ allocate a c string array and initialize its value to $"$CS$363"$

$3.$ Initialize a pointer to null

$4.$ Allocate an array of doubles with the array size of N

$5.$delete the array of doubles allocated in #$4$