Java第二次作业
package homework2; public class Test1 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub double r = 1; double s; s = 3.14 * r * r; System.out.println(s); } }
package homework2; public class Test2 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub float hua = 50, a; a = (hua - 32) * 5 / 9; System.out.println("华氏温度转摄氏温度为" + a); float she = 30, b; b = she * 9 / 5 + 32; System.out.println("摄氏温度转华氏温度为" + b); } }
package homework2; public class Test3 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int a = 5, b = 8, c; c = a; a = b; b = c; System.out.println(a); System.out.println(b); } }
package homework2; public class Test4 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int a = 12345; int b; b = a / 100 * 100; System.out.println(b); } }
package homework2; public class Test5 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub int a = 345; int ge, shi, bai, sum; ge = a % 10; shi = a / 10 % 10; bai = a / 100; sum = ge + shi + bai; System.out.println("各位数的和为" + sum); } }
package homework2; public class Test6 { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub char a = 'T'; System.out.println((char) (a + 32)); char b = 'm'; System.out.println((char) (b - 32)); } }