Corrected Second task
One-way linked list done for reading numbers
One-way link with operators done
Long arithmetics done: sum and sub
Change read_Long and little style changes
Change sum and correct little mistakes
Multiplication done
Reverse Polish notation with stack done without division
Long division finished
Stack calculator done
Changed round division to positive one
Correct calculator, but not initialize EOF
Calculator done(problem with EOF solved)
Some extra files(unnecessary)