第二次作业

1.
package october;

public class aita {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a=3;
        int b=5;
        int tmp;
        tmp=a;
        a=b;
        b=tmp;
        System.out.println("a="+a+"b="+b);
        
        

    }

}

2.

package october;

public class c1 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
     int num=2463;
     int ge;
     int shi;
     int bai;
     int qian;
     int sum;
     ge =num%2460;
     shi =num/10%240;
     bai =num%2000/100;
     qian =num/1000;
     sum =ge+shi+bai+qian;
     System.out.println("和是"+sum);
             
    }

}

3.
package october;

public class c2 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int Ht=50;
        int St;
        St=((50-32)/5)*9;
        System.out.println("华氏摄氏度"+St);

    }

}

4
package october;

public class c4 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        char  c1;
        char  c2;
        c1='B';
        c2=(char)(c1+32);
        System.out.println("转换后的c1为"+c2);
        

    }

}