uppose that you have the following declaration using the class stackType introduced in Chapter 7: tackType stackobj (50); ouble num; d the input is 6436.25364.58614129 Il in the underlines below to complete a C++ code that processes this input as follows: 1. If the number is nonnegative, it pushes the square root of the number onto the stack; 2. otherwise it pushes the square of the number onto the stack. 3. After processing these numbers, outputs the elements of the stack