package bao01; public class Lei01 { public static void main(String[] args) { int a=1; int b=2; int c=a; a=b; b=c; System.out.println("a="+a); System.out.println("b="+b); } }
第一题
第二题
package bao01; import java.util.Scanner; public class Lei01 { public static void main(String[] args) { @SuppressWarnings("resource") Scanner scan=new Scanner(System.in); int i=scan.nextInt(); int X1=i/1000; int X2=i/100%10; int X3=i/10%10; int X4=i%10; System.out.println(X1+X2+X3+X4); } }
第三题
package bao01; public class Lei01 { public static void main(String[] args) { double hs=50; System.out.println((hs-32.0)*5/9); } }
第四题
package bao01; public class Lei01 { public static void main(String[] args) { char c='A'; System.out.println((char)(c+32)); } }