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，利用给定的算符优先关系把中缀表达式转换成计算机容易处理的后缀表达式。本实验中操作数规定为1位数字字符，运算符只有+、-、*、/。-In the form of a sequence of characters entered from the terminal grammatically correct, non-integer variable expression, using the given operator precedence relations to convert infix expression to postfix expressions the computer easier to handle. In this study, the number of provisions to operate a number of characters, operator only+,-,*,/。