上机练习

package slk;

public class sjlx {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a = 1,b = 2;
        int c = a;
        a = b;
        b = c;
    System.out.println(a+" "+b);
    }

}

 

package slk;

public class sjlx {

public static void main(String[] args) {
// TODO Auto-generated method stub
int a = 856;
int b;
int c;
int d;
b=(a%10);
c=(a/10%10);
d=(a/100);
System.out.println("b="+b);
System.out.println("c="+c);
System.out.println("d="+d);
System.out.println(b+c+d);
}

}

 

 

package slk;

public class sjlx {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int H=68;
        int C=25;
        int D;
        int G;
      D=(H-32)*5/9;
          H=D;
          G=C*9/5+32;
          C=G;
          System.out.println(D);
          System.out.println(G);

    }

}

 

 

package slk;

public class sjlx {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

           String SS="ABCDE";
           String AA="abcde";
           System.out.println(SS.toLowerCase());
           System.out.println(SS.toUpperCase());

    }

}