第四章变量 数据类型和运算符实践.doc

第四章变量 数据类型和运算符实践4.3.1 实现购物结算及答应购物小票（Pay.java） 代码：public class Pay public static void main(Stringargs)int shirtPrice = 245; /T恤价格int shoePrice = 570; /网球鞋价格int padPrice = 320; /网球拍价格int shirtNo = 2; /T恤个数int shoeNo = 1; /网球鞋个数int padNo = 1; /网球拍个数double discount = 0.8; /折扣double finalPay; /消费总额double returnMoney; /找钱int score = 33; /积分System.out.println(*消费单*) ;System.out.println(购买物品tt单价tt个数tt金额);System.out.println(T恤tt$245tt2tt$490);System.out.println(网球鞋tt$570tt1tt$570);System.out.println(网球拍tt$320tt1tt$320+n);System.out.println(折扣：tt8折);finalPay=(shirtPrice*shirtNo+shoePrice*shoeNo+padPrice*padNo)*discount;System.out.println(金额总计+tt$+finalPay);System.out.println(实际交费tt$1500);returnMoney=1500-finalPay;System.out.println(找钱+tt$+returnMoney);System.out.println(本次购物所获的积分是:+t+score); 4.3.2 计算会员购物所获积分 代码：(方法一)public class Pay public static void main(Stringargs)int shirtPrice = 245; /T恤价格int shoePrice = 570; /网球鞋价格int padPrice = 320; /网球拍价格int shirtNo = 2; /T恤个数int shoeNo = 1; /网球鞋个数int padNo = 1; /网球拍个数double discount = 0.8; /折扣double finalPay; /消费总额double returnMoney; /找钱double score; /积分System.out.println(*消费单*) ;System.out.println(购买物品tt单价tt个数tt金额);System.out.println(T恤tt$245tt2tt$490);System.out.println(网球鞋tt$570tt1tt$570);System.out.println(网球拍tt$320tt1tt$320+n);System.out.println(折扣：tt8折);finalPay=(shirtPrice*shirtNo+shoePrice*shoeNo+padPrice*padNo)*discount;System.out.println(金额总计+tt$+finalPay);System.out.println(实际交费tt$1500);returnMoney=1500-finalPay;System.out.println(找钱+tt$+returnMoney); score=finalPay*3/100;System.out.println(本次购物所获的积分是:+t+(int)score); （方法二）package pay;public class Pay public static void main(Stringargs)int shirtPrice = 245; /T恤价格int shoePrice = 570; /网球鞋价格int padPrice = 320; /网球拍价格int shirtNo = 2; /T恤个数int shoeNo = 1; /网球鞋个数int padNo = 1; /网球拍个数double discount = 8; /折扣double finalPay; /消费总额double returnMoney; /找钱int score = 33; /积分System.out.println(*消费单*) ;System.out.println(购买物品tt单价tt个数tt金额);System.out.println( T恤 + tt$ + shirtPrice + tt + shirtNo + tt$ + shirtPrice*shirtNo );System.out.println( 网球鞋 + tt$ + shoePrice + tt + shoeNo + tt$ + shoePrice*shoeNo );System.out.println( 网球拍 + tt$ + padPrice + tt + padNo + tt$ + padPrice*padNo + n );System.out.println(折扣：tt8折);finalPay=(shirtPrice*shirtNo+shoePrice*shoeNo+padPrice*padNo)*discount/10;System.out.println(金额总计+tt$+finalPay);System.out.println(实际交费tt$1500);returnMoney=1500-finalPay;System.out.println(找钱+tt$+returnMoney);System.out.println(本次购物所获的积分是:+t+score); 4.3.3 模拟幸运抽奖代码：public class GoodLuck public static void main (String args)int custNo = 8349; /客户会员号（说明：customer-客户）int gewei = custNo % 10; /分析获得个位数int shiwei =custNo / 10 % 10; /分析获得十位数int baiwei =custNo / 100 % 10; /分析获得百位数int qianwei = custNo / 1000; /分析获得千位数int sum = gewei + shiwei + baiwei + qianwei;System.out.println(会员号+custNo+各位之和各位之和：+sum); 4.3.4 计算员工工资代码：public class Salary public static void main(String args)System.out.println(该员工的工资细目为： );int basicWages = 3000; /基本工资double pricesAllowance; /物价津贴double rentAllowance; /房子津贴double salary; /员工薪水System.out.println(基本工资为： + basicWages);pricesAllowance = basicWages*40/100;System.out.println(物价津贴为： + pricesAllowance);r