要求是：题目内容]

1.计算包含三个运算量和两个运算符的四则运算（形如A+B*C）

2.输入运算量和运算符，计算出结果（对错误的计算式给出提示）

3.可选择连续计算多个计算式

4.是否正确实现题目要求

5.在项目报将以上每一步骤的结果均打印输出，验证程序告中画出程序流程图，说明程序设计的算法，附主要程序段。

6.在项目报告中说明知识点、程序设计过程中的难点、解决办法及编程小结或体会。

-Requirements are: Title Content] 1. Calculation of the amount consists of three operations and two operators of four operations (of the form A+ B* C) 2. Enter the computation and operators to calculate the results (of the wrong formula to the prompt) 3. select multiple consecutive calculation formula 4. to achieve the correct title requirements 5. in the project each step of the above reported results are printed out, tell the verification process to draw flowchart to illustrate the program design algorithm, with the main block. 6. In the project report that knowledge point, the program design process, the difficulties, solutions and program summary or experience.