A program to count words found in a set of lines.

"Let a user search a given file for words that might occur in it."

For example , searching "element" would return: element occurs 112 times -(line 36) A set element cointas only a key; -(line 158) operator creates a new element -(line 160) Regardless of whether the element -(line 168) When we fetch an element from a map, we -(line 214) If the element is not found, find returns.