import java.util.Scanner;

public class Test7 {

public static void main(String[] args) {

//// students[0] = 88;

//// students[1] = 97 ;

//// students[2] = 93 ;

////

//// System.out.println( students[2] );

//

//

// int students[] = new int[300] ;

int sum = 0;

int[] students = new int[3];

System.out.println("数组的长度" + students.length);

Scanner input = new Scanner(System.in);

for (int i = 0; i < students.length; i++) {

System.out.println("请输入第" + (i + 1) + "个学生的成绩：");// +:字符串拼接 数学加

students[i] = input.nextInt();

sum += students[i];

}

System.out.println(sum);

//1:只声明数组的元素个数，但不赋值（默认值）

int[] students0;

students0 = new int[3];

// System.out.println(students0[1]);

int num;

num = 1;

//2:只赋值，但不声明元素个数

// int[] students ;

// students = new int[]{97,98,99} ;

// System.out.println(students[1]);

//3: 理解为2的简化形式 .此种形式 不能拆开编写

// int[] students ;

// students = {97,98,99} ;

// System.out.println(students[1]);

}

}