说明：  实现下列六种基本运算：1）由输入的实部和虚部生成一个复数；2）两个复数求和；3）两个复数求差；4）两个复数的求积；5）从已知复数中分离出实部；6）从已知复数中分离出虚部。运算结果以相应的复数或实数的表示形式显示。
(To achieve the following six basic operations: 1) by the input of real and imaginary parts generate a plural 2) the sum of two complex numbers 3) The difference between two complex requirements 4) 2 complex quadrature 5) from the know the real part of complex isolated 6) isolated from known complex imaginary part. Computation results to the corresponding complex or real numbers that are displayed.)