delete 1st part of comments.
deleting functions in circuit, part 1.
deleting unused function in circuits. part 2.
eliminating comments of circuit.cpp. part 4.
delete the mode and omega param in circuit and main. part 5.
modifying circuit.cpp. part 6.
finish modifying circuit.cpp.
cleaning block.cpp. part 1.
finish cleaning block.
finish cleaning block.
finish modifying the code. Test now.
modify the input param in main.cpp.