As to why one uses pointers to pointers: 1  The name of an array usually yields the address of its first element. 2  Even though an array of strings sounds one-dimensional, it is in fact two-dimensional, since strings are character arrays. 3  A function f will need to accept an argument of type t ** if it is to alter a variable of type t *.
How to Use a Clinometer. A clinometer is used to measure angles. This is the method used by foresters to measure the height of a tree. The clinometer only works for measuring height when the observer is standing exactly one chain length away from the tree (66â or 100 links).
Distance varies according to tree type. Plant standard trees 30 to 35 feet apart, dwarf trees 15 to 20 feet apart and semi-dwarf trees between 20 to 25 feet apart.