1、已知a,b均是整型变量,写出将a,b两个变量中的值互换的程序。(知识点:变量和 运算符综合应用)
package first; public class one { public static void main(String[] args) { // TODO Auto-generated method stub int a=1; int b=2; int c=a; a=b; b=c; System.out.println("交换后a的值:"+a); System.out.println("交换后b的值:"+b); }
给定一个0~1000的整数,求各位数的和,
import java.util.Scanner; public class one { public static void main(String[] args) { // TODO Auto-generated method stub int a = 1234; int b, c, d, e, sum; e = a/ 1000; b = a/ 100 % 10; c = a / 10 % 10; d = a % 10; sum = b +c +d +e ; System.out.println("结果为"+sum); }
华氏度50转成摄氏度是多少???
package first; public class one { public static void main(String[] args) { // TODO Auto-generated method stub //定义一个华氏度 int a=50; //定义一个摄氏度 int b=(a-32)*5/9; System.out.println("摄氏度="+b); } }
给定一个任意的大写字母A~Z,转换为小写字母。
package first; public class one { public static void main(String[] args) { // TODO Auto-generated method stub char a = 'A'; System.out.println((char)(a + 32)); } }