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package guangzhaowei;
import java.util.Scanner;
public class Calculator{
public static void main(String[] args){
char e;
boolean f=true;
Scanner in = new Scanner(System.in);
while(f){
System.out.println("请选择运算方式：+、-、*、/、^、"
+ "对数：l，三角函数：s；或者退出：e");
e=in.next().charAt(0);
switch(e){
case '+':case '-':case '*':case '/':
Easy.c();
break;
case '^':
Exp.pow();
case 'l':
Logarithm.log();
case 's':
Triangle.angle();
case 't':
f=false;
}
