Code the following operations in C++ please.

InsterLine(LinePtrType linePtr, LineType new line)

Function: Insert newLine at the current line.

Postcondition: newLine has been inserted after currentLine and currentLine points to newLine.

For this assignment assume the text being edited by the line editor is being represented by a doubly linked list of nodes both containing 80 collumn lines of text (type lineType) and there is one external pointer (type lineType*) to the list which points to the "current'' line in the text being edited. The list has a header node and a trailer node