Description: Program design require for a function, can complete randomly input an expression (including parentheses, digital, arithmetic symbol), and be able to according to your input expression to evaluated, and come to the correct results.
(1) the input form and of the input value range: input parentheses, the digital and+-*/arithmetic symbols, because I didn t write the legality function of the program, so the function testing input beside the digital and arithmetic operator parentheses to other illegal symbol will appear garbled.
(2) the output form: correct operation results of the expression
(3) program can reach function: how many expressions do you want to calculate, and input the number you want ,corresponding input so severl expression can be calculated and output it s result.
(4) test data:
Sample Input：
4
1+ 1
1+ 2*2
( 2+ 1)*34
1+ (7+19）
Sample Output:
2
5
102
27
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File list (Check if you may need any files):
Expression.cpp
文档说明.doc
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