以字符形式从终端输入语法正确的，不含变量的整数表达式。利用算符优先关系，实现对算术四则混合运算表达式求值。-to form characters from the terminal input grammar correct, the non-integer variable expression. Operator priority relations and the realization of the four arithmetic operations mixed expression

(1) 生成n个[0,65535]以内的整数随机数，存入文本文件； (2) 将n个随机数从小到大排序，并显示结果。排序采用k桶法 (3)用函数编制混合同余的伪随机数发生器-(1) generate n-[0,65535] integer random number within, into a text file (2) n random numbers from small to large order, and displays the results. Sort by k B

以字符序列的形式从终端输入语法正确的，不含变量的整数表达式，利用给定的运算符有限关系，实现对算术四则混合运算表达式的求值。-In the form of a sequence of characters entered grammatically correct, excluding variable integer expression the terminal, using a given operator limited relationship to realize the arith