A: score[10]
B: score[6.0]
C: score[0]
D: score(7)
举一反三
- 若有定义int score[10];，则对score数组中的元素的正确引用是（ ）
- 定义一个存储5个学生成绩的数组不正确的是（） A: int[] score = new int[5]; B: int score[] = new int[5]; C: double[] score; score = new double[5]; D: double[] score = new double[];
- 在下列代码中，有（ ）处实现了拆箱。 int score=5; object o= score; o=10; score =(int)o; object oScore = score;
- 用户输入0-100之间的百分制成绩，将其转为五分制输出，下面正确的答案为： A: score = float(input()) degree = "EEEEEEDCBAA" score_five = degree[score / 10] print(score_five) B: score = float(input()) degree = "EEEEEEDCBAA" score_five = degree[score // 10] print(score_five) C: score = float(input()) degree = "EEEEEEDCBAA" score_five = degree[int(score // 10)] print(score_five) D: score = float(input()) degree = "EEEEEEDCBA" score_five = degree[int(score // 10)] print(score_five)
- score是一个整数数组，有五个元素，已经正确初始化并赋值，仔细阅读下面代码，程序运行结果是() temp = score[0]; for (int index = 1;index < 5;index++) { if (score[index] < temp) { temp = score[index]; } }
内容
- 0
在如下结构体定义中，不正确的是○。 A: struct student { int no; char name[10]; float score; } B: struct stud[20] { int no; char name[10]; float score; } C: struct student { int no; char name[10]; float score; }stud[20]; D: struct{int no;char name[10];float score;}stud[100];
- 1
下列关于数组的静态初始化语句，正确的是（ ） A: int [] score =new int[]{1,2,3,4,5}; B: int [] score=new int[5]{1,2,3,4,5}; C: int [5] score=new int[]{1,2,3,4,5}; D: int [5] score=new int[5]{1,2,3,4,5};
- 2
从学生成绩表SC中查询平均成绩大于60分的同学的学号和平均成绩的正确语句为： A: selectsno,avg(score)assscorefromscgroupbysnohavingavg(score)>60 B: selectsno,avg(score)assscorefromscgroupbysnowhereavg(score)>60 C: selectsno,avg(score)assscorefromscwhereavg(score)>60 D: selectsno,avg(score)assscorefromschavingavg(score)>60
- 3
以下参数传递正确的是： A: def score(mid_score, end_score): ……score(88, 79) B: def score( *，mid_score, end_score, mid_rate＝0.4): ……score(88, 79) C: def score( *，mid_score, end_score, mid_rate＝0.4): ……score(end_score = 79, mid_score = 88) D: def score( *，mid_score, end_score, mid_rate＝0.4): ……score(mid_score = 88, end_score = 79,0.5)
- 4
查询成绩在60-80之间的学生信息，正确的语句是？ A: db.students.find({"score":{$gte:60,$lte:80}}) B: db.students.find({"score":{$gte:80},{"score":{$lte:60}}}) C: db.students.find({"score":{$gte:60},{"score":{$te:80}}}) D: db.students.find({"score":{$gt:80},{"score":{$lt:60}}})