1.19英语翻译
作者:互联网
题目来源:https://acs.jxnu.edu.cn/problem/POJ2106
重点单词:
operators:n.运算符
priority :n.优先事项
yield :n.屈服,v.产生
variable:adj.多变的
exceed :v.超过
separate:v.分隔
sequence:n.序列
resulting value:结果值
consecutive:adj.随后的
corresponding:adj.相应的
format: n.格式
Boolean Expressions
布尔表达式
1000ms 30000K
描述:
The objective of the program you are going to produce is to evaluate boolean expressions as the one shown next:To perform the evaluation of an expression, it will be considered the priority of the operators, the not having the highest, and the or the lowest. The program must yield V or F , as the result for each expression in the input file. V表示正确,F表示错误。这表达式可能包含以下一些运算符:!代表非,&代表和,| 代表或,也允许使用括号去进行操作分组。 执行表达式的评估,需要考虑运算符的优先级,且没有最高或最低优先级。这个程序必须要产生V或F,作为输入文件中每一个表达式的结果。
输入:
The expressions are of a variable length, although will never exceed 100 symbols. Symbols may be separated by any number of spaces or no spaces at all, therefore, the total length of an expression, as a number of characters, is unknown.The number of expressions in the input file is variable and will never be greater than 20. Each expression is presented in a new line, as shown below. 虽然这表达式的长度是可变的,但不会超过100个符号。符号可以由任意数量的空格或没有空格来隔开,因此,作为这表达式的总长度是未知的。 输入文件中的表达式数量是可变的并且不会多于20个。每个表达式都显示在一个新行上,如下所示
输出:
For each test expression, print "Expression " followed by its sequence number, ": ", and the resulting value of the corresponding test expression. Separate the output for consecutive test expressions with a new line. Use the same format as that shown in the sample output shown below.对于每个测试表达式,打印“Expression”,后面跟着它的序列号,“:”,以及相应测试表达式的结果值。 用新行分隔连续测试表达式的输出 使用和下面显示的示例输出相同的格式。
样例输入:
( V | V ) & F & ( F| V) !V | V & V & !F & (F | V ) & (!F | F | !V & V) (F&F|V|!V&!F&!(F|F&V))
样例输出:
Expression 1: F Expression 2: V Expression 3: V
标签:shown,expression,number,1.19,英语翻译,expressions,Expression,表达式 来源: https://www.cnblogs.com/qq-2556146261/p/15824644.html