有3名学生,每名学生有 3 门课的成绩(数学、外语、计算机),从键盘输入以上数据(包括学号,姓名,3门课成绩),随即输出总分最高的学生对象的信息。 java
时间: 2023-08-31 16:38:22 浏览: 85
Ex_Ctrl1SDI.rar_joytis_用对话框输入学生成绩
### 回答1:
以下是一个 Java 的实现:
```java
import java.util.Scanner;
public class Main {
static class Student {
String id; // 学号
String name; // 姓名
int math; // 数学成绩
int english; // 外语成绩
int computer; // 计算机成绩
int total; // 总分
public Student(String id, String name, int math, int english, int computer) {
this.id = id;
this.name = name;
this.math = math;
this.english = english;
this.computer = computer;
this.total = math + english + computer;
}
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// 读入学生数量
System.out.print("请输入学生数量:");
int numStudents = scanner.nextInt();
// 读入每个学生的信息
Student[] students = new Student[numStudents];
for (int i = 0; i < numStudents; i++) {
System.out.printf("请输入第 %d 个学生的信息:\n", i + 1);
System.out.print("学号:");
String id = scanner.next();
System.out.print("姓名:");
String name = scanner.next();
System.out.print("数学成绩:");
int math = scanner.nextInt();
System.out.print("外语成绩:");
int english = scanner.nextInt();
System.out.print("计算机成绩:");
int computer = scanner.nextInt();
students[i] = new Student(id, name, math, english, computer);
}
// 找到总分最高的学生
Student topStudent = students[0];
for (int i = 1; i < numStudents; i++) {
if (students[i].total > topStudent.total) {
topStudent = students[i];
}
}
// 输出结果
System.out.printf("总分最高的学生是 %s(学号:%s),总分为 %d 分。\n", topStudent.name, topStudent.id, topStudent.total);
}
}
```
运行程序,输入学生数量和每个学生的信息,即可输出总分最高的学生信息。注意,这个程序假设输入的数据都是合法的,没有做输入校验。
### 回答2:
首先,我们需要创建一个学生类,该类包括学号、姓名和三门课的成绩属性,并提供相应的set和get方法。然后,我们需要在主函数中创建三个学生对象,并从键盘输入其信息。
接下来,我们可以使用循环语句,计算每个学生的总分,并将其存储在一个数组中。同时,我们还需要记录最高总分的学生索引。
最后,我们可以根据最高总分的学生索引,输出该学生的学号、姓名和三门课的成绩信息。
以下是示例代码实现:
```java
import java.util.Scanner;
class Student {
private int studentId;
private String name;
private int mathScore;
private int englishScore;
private int computerScore;
public void setStudentId(int studentId) {
this.studentId = studentId;
}
public int getStudentId() {
return studentId;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setMathScore(int mathScore) {
this.mathScore = mathScore;
}
public int getMathScore() {
return mathScore;
}
public void setEnglishScore(int englishScore) {
this.englishScore = englishScore;
}
public int getEnglishScore() {
return englishScore;
}
public void setComputerScore(int computerScore) {
this.computerScore = computerScore;
}
public int getComputerScore() {
return computerScore;
}
}
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
Student[] students = new Student[3];
for (int i = 0; i < students.length; i++) {
Student student = new Student();
System.out.println("请输入第" + (i + 1) + "个学生的学号:");
int studentId = scanner.nextInt();
student.setStudentId(studentId);
System.out.println("请输入第" + (i + 1) + "个学生的姓名:");
String name = scanner.next();
student.setName(name);
System.out.println("请输入第" + (i + 1) + "个学生的数学成绩:");
int mathScore = scanner.nextInt();
student.setMathScore(mathScore);
System.out.println("请输入第" + (i + 1) + "个学生的外语成绩:");
int englishScore = scanner.nextInt();
student.setEnglishScore(englishScore);
System.out.println("请输入第" + (i + 1) + "个学生的计算机成绩:");
int computerScore = scanner.nextInt();
student.setComputerScore(computerScore);
students[i] = student;
}
int maxTotalScore = 0;
int maxIndex = 0;
for (int i = 0; i < students.length; i++) {
Student student = students[i];
int totalScore = student.getMathScore() + student.getEnglishScore() + student.getComputerScore();
if (totalScore > maxTotalScore) {
maxTotalScore = totalScore;
maxIndex = i;
}
}
Student maxStudent = students[maxIndex];
System.out.println("总分最高的学生信息如下:");
System.out.println("学号:" + maxStudent.getStudentId());
System.out.println("姓名:" + maxStudent.getName());
System.out.println("数学成绩:" + maxStudent.getMathScore());
System.out.println("外语成绩:" + maxStudent.getEnglishScore());
System.out.println("计算机成绩:" + maxStudent.getComputerScore());
}
}
```
这样,我们就可以从键盘输入三个学生的相关信息,并输出总分最高的学生对象的学号、姓名和三门课的成绩信息。
### 回答3:
首先,我们先创建一个名为Student的类来表示学生对象。这个类包含学号(id)、姓名(name)和三门课的成绩(mathScore, englishScore, computerScore)作为类的属性。
接下来,我们在主方法中创建一个Student对象的数组,大小为3,用于存储输入的学生信息。然后使用键盘输入来获取每个学生对象的信息。
在输入完所有学生信息后,我们可以通过遍历数组,计算每个学生的总分,并找出总分最高的学生对象。
下面是用Java代码实现以上思路的示例:
```java
import java.util.Scanner;
public class Student {
private String id;
private String name;
private int mathScore;
private int englishScore;
private int computerScore;
public Student(String id, String name, int mathScore, int englishScore, int computerScore) {
this.id = id;
this.name = name;
this.mathScore = mathScore;
this.englishScore = englishScore;
this.computerScore = computerScore;
}
public int getTotalScore() {
return mathScore + englishScore + computerScore;
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
Student[] students = new Student[3];
// 输入学生信息
for (int i = 0; i < students.length; i++) {
System.out.println("请输入第" + (i+1) + "名学生的学号:");
String id = scanner.nextLine();
System.out.println("请输入第" + (i+1) + "名学生的姓名:");
String name = scanner.nextLine();
System.out.println("请输入第" + (i+1) + "名学生的数学成绩:");
int mathScore = scanner.nextInt();
System.out.println("请输入第" + (i+1) + "名学生的外语成绩:");
int englishScore = scanner.nextInt();
System.out.println("请输入第" + (i+1) + "名学生的计算机成绩:");
int computerScore = scanner.nextInt();
scanner.nextLine(); // 读取掉换行符
students[i] = new Student(id, name, mathScore, englishScore, computerScore);
}
// 找出总分最高的学生
Student highestScoringStudent = students[0];
for (int i = 1; i < students.length; i++) {
if (students[i].getTotalScore() > highestScoringStudent.getTotalScore()) {
highestScoringStudent = students[i];
}
}
// 输出总分最高的学生对象的信息
System.out.println("总分最高的学生是:");
System.out.println("学号:" + highestScoringStudent.getId());
System.out.println("姓名:" + highestScoringStudent.getName());
System.out.println("数学成绩:" + highestScoringStudent.getMathScore());
System.out.println("外语成绩:" + highestScoringStudent.getEnglishScore());
System.out.println("计算机成绩:" + highestScoringStudent.getComputerScore());
}
}
```
以上代码实现了从键盘输入学生信息,并输出总分最高的学生对象的信息。注意在这个示例中,我们假设输入的数值都是合法的整数。如果需要增加输入数据的校验或异常处理,可以根据实际需求进行修改。
阅读全文