Java Learning next day small exercise

1. From the console to enter the students Wang Hao 3 course results, write program implementation

Chengji

(1) The difference between the scores of the math class and the English class

(2) The average score of 3 courses

The code is as follows:

Package Lianxiti;

Import Java.util.Scanner;

Public class Chengji2_5 {

public static void Main (string[] args) {

// TODO auto-generated method stub

/*

* Requirements: input from the console of the college Wang Hao's curriculum achievements, program implementation:

* 1) The difference between the scores of math class and English class

* 2) The average score of 3 courses

*/

Scanner in=new Scanner (System. In );

System. out.println ("Please input Wang Hao's language score:");

int chinese=in.nextint ();

System. out.println ("Please enter Wang Hao's mathematical results");

int math=in.nextint ();

System. out.println ("Please input Wang Hao's English score");

int english=in.nextint ();

System. out. println ("---------------------------------------------------------\ n"+ "language \ t math \ t English \t\n"+ Chinese+ "\ T"+math+ "\ T"+中文版+ "\ n---------------------------------------------------------\ n ");

int cha=math-english; Poor grades in math and English

System. out.println ("math and English poor grades are:" +cha);

int Average= (Chinese+math+english)/3;

System. out.println ( "The average of the classes is:" +average);

}

}

2. The radius of the circle is known radius= 1.5to find its area

Mianji

Tips:
double pi = 3.14159;// Pi

double radius = 1.5;// radius

Double area = pi * radius * RADIUS; Calculate Circle Area

The code is as follows:

Package Lianxiti;

Public class Mianji {

public static void Main (string[] args) {

// TODO auto-generated method stub

/*

* The radius of the known circle is radius=1.5, the area is calculated,

* Hint:

* Double pi=3.14159;

* double=radius=1.5;

* Double Area=pi*radius*radius;

* area is 7.068577499999999

*/

double pi=3.14159;

double radius=1.5;

Double area=pi*radius*radius;

System. out.println (area);

}

}

3.Calculate the number of weeks and the number of days remaining depending on the number of days

Tips:
int days = 46;   // days

int week = DAYS/7;   // Week

int leftday = days% 7;   // number of days left

The code is as follows:

Package Lianxiti;

Public class Genjutianshujisuanzhoushu {

public static void Main (string[] args) {

// TODO auto-generated method stub

/*

* Calculates the number of weeks and the number of days remaining depending on the number of days (46)

* Hint: int days=46;

* int week=days/7;

* int leftday=day%7;

*/

int days=46;

int week=days/7;

int leftday=days%7;

System. out.println ("Total" +days+"weeks" +week+"Number of days left" + leftday);

}

}

4. Implement a digital cipher, the encryption rule is: Encryption result = (integer *10+5 )/2 + 3.14159, the encryption result is still an integer

The code is as follows:

Package pro_0307_01; Import Java.util.Scanner; public class Jiami {public static void main (string[] args) {//enables the user to interact with the console Scanner in=new Scanner (system.in); System.out.println ("Please enter a number:"); Receives data entered from the console, assigns to the variable num int num=in.nextint (); System.out.println ("Original data is:" +num); int num2= (int) ((num*10+5)/2+3.14159); SYSTEM.OUT.PRINTLN ("The result of encryption is:" +num2);}}

Java Learning next day small exercise