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) from the input of the real and imaginary parts generate a plural 2) 2 complex summation 3) 2

its a good program it make integration

Newton-cotes型求积公式，Romberg算法和Gauss型求积公式-Newton-cotes type quadrature formulas, Romberg algorithm and Gauss type quadrature formulas