复数运算的演示程序：

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.从已知复数中分离出实部和虚部

5.复数及相应运算结果以相应的表现形式显示。-Plural computing demo program: 1. By the importation of the real and imaginary parts generate a plural 2. Two plural summation 3. Two plural for poor 4. From plural known to isolate real and imaginary parts of 5. Plural and the corresponding computing results show that the corresponding expressions.