p8qcz9lve/main.java

package calculator;
import java.util.Scanner;
public class main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		
		System.out.println("选择计算类型\n1、e~x\n2、logax\n3、＋－×÷\n4、三角函数\n0、退出");	
		Scanner inScanner = new Scanner(System.in);
          
          int flag=1;
     while(flag==1)
     {
          int op1=inScanner.nextInt();
          switch(op1) {
          case 1: 
        	  ex ex=new ex();
        	  break;
          
		  case 2: 
			  log log=new log();
			  break;
		 
		  case 3: 
			  cal4 cal=new cal4(); 
			  break;
		  
		  case 4: 
			  sj sj=new sj();
		      break;
		  
		  case 0: flag=0; 
          }
	}
     System.out.println("计算结束");
}

}