举一反三
- Which method will complete this class?() A: public int compareTo(Object o){/* more code here */} B: public int compareTo(Score other){/* more code here */} C: public int compare(Score s1, Score s2){/* more code here */} D: public int compare(Object o1, Object o2){/* more code here */}
- 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};
- 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[];
- 以下有关类的声明,正确的是 A: class Student(object) def __init__(self, name, score): self.name = name self.score = score B: class Student(object) def __init__(self, name, score) self.name = name self.score = score C: class Student(object): def __init__(self, name, score): self.name = name self.score = score D: class Student(object): def __int__(self, name, score): self.name = name self.score = score
- 若有定义int score[10];,则对score数组中的元素的正确引用是( ) A: score[10] B: score[6.0] C: score[0] D: score(7)
内容
- 0
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]; } }
- 1
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];
- 2
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)
- 3
若有定义int score[10];,则对score数组中的元素的正确引用是( )
- 4
下列关于主键约束的语句哪个不正确 A: CREATE TABLE STU(no INT PRIMARY KEY,name VARCHAR2(20)) B: CREATE TABLE STU(no INT,name VARCHAR2(20),PRIMARY KEY(no)) C: CREATE TABLE SCORE(sno INT,cno INT,score INT,PRIMARY KEY(sno,cno)) D: CREATE TABLE SCORE(sno INT PRIMARY KEY,cno INT PRIMARY KEY,score INT)