Java 编程查找五门科目的总分、平均分和百分比

编写一个 Java 程序，查找五门科目或 N 门科目的总分、平均分和百分比，并附带示例。

Java 编程查找五门科目总分、平均分和百分比 示例 1

此 Java 程序允许用户输入五门科目的五个不同值。然后，此 Java 程序将查找这五门科目的总分、平均分和百分比。在此示例中，我们使用算术运算符来执行算术运算。

// Java program to find Total Average and percentage of Five Subjects
import java.util.Scanner;

public class Totalof5subjects1 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int english, chemistry, computers, physics, maths; 
	    float total, Percentage, Average;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Five Subjects Marks : ");
		english = sc.nextInt();	
		chemistry = sc.nextInt();	
		computers = sc.nextInt();	
		physics = sc.nextInt();	
		maths = sc.nextInt();	
		
		total = english + chemistry + computers + physics + maths;
		Average = total / 5;
	    Percentage = (total / 500) * 100;
	    
	    System.out.println(" Total Marks =  " + total);
	    System.out.println(" Average Marks =  " + Average);
	    System.out.println(" Marks Percentage =  " + Percentage);
	}
}

Java 编程计算五门科目总分、平均分和百分比 示例 2

上面的 Java 程序是针对固定数量的科目的。在此 Java 程序中，用户可以选择任意数量的科目。然后，它会查找总分、平均分和百分比。

// Java program to find Total Average and percentage of Five Subjects
import java.util.Scanner;

public class Totalof5subjects2 {
	private static Scanner sc;
	public static void main(String[] args) 
	{
		int totalSubjects, i;
	    float Marks, total = 0, Percentage, Average;
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Total Number of Subjects : ");
		totalSubjects = sc.nextInt();
		
		System.out.print(" Please Enter the Subjects Marks : ");
		for(i = 0; i < totalSubjects; i++)
		{
			Marks = sc.nextInt();
			total = total + Marks;
		}
	
		Average = total / totalSubjects;
	    Percentage = (total / (totalSubjects * 100)) * 100;
	    
	    System.out.println(" Total Marks =  " + total);
	    System.out.println(" Average Marks =  " + Average);
	    System.out.println(" Marks Percentage =  " + Percentage);
	}
}

分析

1. 第一个 Java System.out.print 语句要求用户输入科目总数。例如，3 门科目。
2. For 循环通过使用条件 i < totalsubjects 来阻止用户输入超过 3 个值。在下一行，我们将用户输入的值添加到 Total。
3. 循环外部，我们计算了平均值和百分比。

 Please Enter the Total Number of Subjects : 6
 Please Enter the Subjects Marks : 80 85 75 65 90 95
 Total Marks =  490.0
 Average Marks =  81.666664
 Marks Percentage =  81.666664

Java 编程计算五门科目总分、平均分和百分比 示例 3

此程序与第一个示例相同。但在该 Java 程序中，我们创建了一个单独的方法来查找学生的总分、平均分和百分比。

// Java program to find Total Average and percentage of Five Subjects
import java.util.Scanner;

public class Totalof5subjects3 {

	private static Scanner sc;
	public static void main(String[] args) 
	{
		int english, chemistry, computers, physics, maths; 	    
		sc = new Scanner(System.in);
		
		System.out.print(" Please Enter the Five Subjects Marks : ");
		english = sc.nextInt();	
		chemistry = sc.nextInt();	
		computers = sc.nextInt();	
		physics = sc.nextInt();	
		maths = sc.nextInt();	
		
		totalmarks(english, chemistry, computers, physics, maths);
	}	
	public static void totalmarks(int eng, int chem, int com, int phy, int math)
	{
		float total, Percentage, Average;
		total = eng + chem + com + phy + math;
		Average = total / 5;
	    Percentage = (total / 500) * 100;
	    
	    System.out.println(" Total Marks =  " + total);
	    System.out.println(" Average Marks =  " + Average);
	    System.out.println(" Marks Percentage =  " + Percentage);
	}
}

 Please Enter the Five Subjects Marks : 65 75 85 95 90
 Total Marks =  410.0
 Average Marks =  82.0
 Marks Percentage =  82.0