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();
					break;
				case 'l':
					Logarithm.log();
					break;
				case 's':
					Triangle.angle();
					break;
				case 't':
					f=false;
			}
		}
	}
}