文件名称:calculator
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/*本程序是一个简单的计算器模拟程序。对任意给定的正确的四则表达式，程序计算其结果值并输出。表达式中运算分量为无
正负号整数，运算符为+ - * / ，圆括号按常规配对，表达式以“=”结束。函数getach（）为获取表达式的一个合法字符，
并将字符存入变量curch；函数指针数组func[]是为了统一加减乘除计算而设置的。*/
-/* This program is a simple calculator simulation program. Correct for any given expression of four, the program calculates the result value and output. Computing the expression for the unsigned integer quantity, operator of+-* /, according to conventional matching parentheses, the expression to " =" end. Function getach () to obtain expression of a legitimate character, and character into the variable curch array of function pointers func [] to a unified set of calculations, Math.* /
正负号整数，运算符为+ - * / ，圆括号按常规配对，表达式以“=”结束。函数getach（）为获取表达式的一个合法字符，
并将字符存入变量curch；函数指针数组func[]是为了统一加减乘除计算而设置的。*/
-/* This program is a simple calculator simulation program. Correct for any given expression of four, the program calculates the result value and output. Computing the expression for the unsigned integer quantity, operator of+-* /, according to conventional matching parentheses, the expression to " =" end. Function getach () to obtain expression of a legitimate character, and character into the variable curch array of function pointers func [] to a unified set of calculations, Math.* /
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calculator.c