项目实战--实现淡旺季飞机票打折

1.项目案例

某航空公司为吸引更多的顾客推出了优惠活动。原来的飞机票价为 60000 元，活动时，4~11 月旺季，头等舱 9 折，经济舱 8 折；1~3 月、12 月淡季，头等舱 5 折，经济舱 4 折，求机票的价格。

2.项目实现

2.1用if-else语句实现淡旺季飞机票打折

import java.util.Scanner;
public class plan01{
 	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		System.out.print("The month in which you want to buy tickets:");
		int month =sc.nextInt();
		System.out.print("What cabin do you want to buy(1. First class 2. Economy class):");
		int choice=sc.nextInt();
		double resault=60000;
        	if((month>=4&&month<=11)||(month==12)){
			if(choice==1){
                  		resault=0.9*resault;
			}else{
	  		resault=0.8*resault;}
         		}
       		if(month>=1&&month<=3){
			if(choice==1){
                  		resault=0.5*resault;
			}else{
	 		 resault=0.4*resault;}
        		}
       		 if(choice==1){
		System.out.println("The first class fare is "+resault);}
		else{System.out.println("The economy class fare is "+resault);}
	}
}

2.2用switch-case语句实现淡旺季飞机票打折

上面是if-else语句嵌套实现的淡旺季飞机票打折，下面我们用switch语句实现，代码如下

import java.util.Scanner;
public class plan02{
	public static void main(String[] args){
		Scanner s = new Scanner(System.in);
		System.out.print("The month in which you want to buy tickets: ");
		int month = s.nextInt();
		System.out.print("What cabin do you want to buy(1. First class 2. Economy class): ");
		int choice = s.nextInt();
		double resault=60000;
		switch(month){
		case 1:
		case 2:
		case 12:
		case 3:
			switch(choice){
				case 1:
					resault=0.5*resault;
					break;
				case 2:
					resault=0.4*resault;	
					break;				
			}
			break;
		case 4:
		case 5:
		case 6:
		case 7:
		case 8:
		case 9:
		case 10:
		case 11:
			switch(choice){
				case 1:
					resault=0.9*resault;
					break;
				case 2:
					resault=0.8*resault;	
					break;				
			}
			break;
		}
		
		switch(choice){
		case 1:
			System.out.println("The first class fare is "+resault);
			break;
		case 2:
			System.out.println("The economy class fare is "+resault);
			break;
		}	
	}
}