下面程序的运行结果___ #include “stdio.h” int id=3; void main { int id=5; { int id; id=7; printf(“id=%d\n”, id ); } printf(“id=%d\n”, id ); }
下面程序的运行结果___ #include “stdio.h” int id=3; void main { int id=5; { int id; id=7; printf(“id=%d\n”, id ); } printf(“id=%d\n”, id ); }
id是什么?int能否为id?如何封装成id?
id是什么?int能否为id?如何封装成id?
以下程序段哪段是正确的() A: declare id int default 0; repeat set id=id+1; end repeat;<br> until id>=10; B: declare id int default 0; repeat set id=id+1; end repeat;<br> until id>=10 C: declare id int default 0; repeat set id=id+1; until id>=10 end repeat; D: declare id int default 0; repeat set id=id+1; until id>=10; end repeat;
以下程序段哪段是正确的() A: declare id int default 0; repeat set id=id+1; end repeat;<br> until id>=10; B: declare id int default 0; repeat set id=id+1; end repeat;<br> until id>=10 C: declare id int default 0; repeat set id=id+1; until id>=10 end repeat; D: declare id int default 0; repeat set id=id+1; until id>=10; end repeat;
hive里创建表test,表里添加两个字段id和name,以下哪个HQL是正确的( ) A: create test(id int, name string); B: create test(int id, string name); C: create table test(int id, string name); D: create table test(id int, name string)
hive里创建表test,表里添加两个字段id和name,以下哪个HQL是正确的( ) A: create test(id int, name string); B: create test(int id, string name); C: create table test(int id, string name); D: create table test(id int, name string)
已知函数getStudent()定义为public Student getStudent(int ID),下列四个选项中可以与getStudent构成重载的方法是 A: private Student getStudent(int ID) B: public String getStudent(int ID) C: Student getStudent(String name) D: public Student get(int ID)
已知函数getStudent()定义为public Student getStudent(int ID),下列四个选项中可以与getStudent构成重载的方法是 A: private Student getStudent(int ID) B: public String getStudent(int ID) C: Student getStudent(String name) D: public Student get(int ID)
阅读下面T-SQL语句,对变量赋值时存在错误的是( )(其中money为钱币数据类型,为其变量赋值可用或者不用$等货币符号)。 A: declare @id int ,@price money Set @id =100 Set @price=$2.21 B: declare @id int ,@price money Select @id=100,@price=2.21 C: declare @id int ,@price money set @id=100,@price=2.21 D: declare @id int ,@price money Select @id=100Select @price=$2.21
阅读下面T-SQL语句,对变量赋值时存在错误的是( )(其中money为钱币数据类型,为其变量赋值可用或者不用$等货币符号)。 A: declare @id int ,@price money Set @id =100 Set @price=$2.21 B: declare @id int ,@price money Select @id=100,@price=2.21 C: declare @id int ,@price money set @id=100,@price=2.21 D: declare @id int ,@price money Select @id=100Select @price=$2.21
为表TEST中ID列添加主键约束的语法是() A: ALTER TABLE TEST CHANGE( ID INT PRIMARY KEY) B: ALTER TABLE TEST ADD( ID INT PRIMARY KEY) C: ALTER TABLE TEST MODIFY( ID INT PRIMARY KEY) D: ALTER TABLE TEST ADD CONSTRAINT PK PRIMARY KEY (ID)
为表TEST中ID列添加主键约束的语法是() A: ALTER TABLE TEST CHANGE( ID INT PRIMARY KEY) B: ALTER TABLE TEST ADD( ID INT PRIMARY KEY) C: ALTER TABLE TEST MODIFY( ID INT PRIMARY KEY) D: ALTER TABLE TEST ADD CONSTRAINT PK PRIMARY KEY (ID)
智慧职教: 以下是按商品id删除商品信息的方法,请把程序补充完整: public int delete(long id){ SQLiteDatabase db=helper.getWritableDatabase(); int result=db.delete("account","_id=?",_____________); db.close(); return result; }
智慧职教: 以下是按商品id删除商品信息的方法,请把程序补充完整: public int delete(long id){ SQLiteDatabase db=helper.getWritableDatabase(); int result=db.delete("account","_id=?",_____________); db.close(); return result; }
中国大学MOOC: class NumTest{ final int id = 1; int id2 = 1; NumTest(int id,int id2){ this.id = id; this.id2 = id2; } void printId(){ System.out.print(id+id2+ ); } public static void main(String[] args) { NumTest a = new NumTest(1,2); NumTest b = new NumTest(2,1); NumTest c = new NumTest(0,0); a.printId(); b.printId(); c.printId(); }}
中国大学MOOC: class NumTest{ final int id = 1; int id2 = 1; NumTest(int id,int id2){ this.id = id; this.id2 = id2; } void printId(){ System.out.print(id+id2+ ); } public static void main(String[] args) { NumTest a = new NumTest(1,2); NumTest b = new NumTest(2,1); NumTest c = new NumTest(0,0); a.printId(); b.printId(); c.printId(); }}
hive创建表并指定列分隔符的正确的HQL是( )。 A: create table dbtest(id int, name string) row format delimited terminate by ','; B: create table dbtest(int id, string name) row format delimited by ','; C: create table dbtest(id int, name string) row format delimited fields terminated by ','; D: create table dbtest(int id, string name) row format delimited columns fields terminated by ',';
hive创建表并指定列分隔符的正确的HQL是( )。 A: create table dbtest(id int, name string) row format delimited terminate by ','; B: create table dbtest(int id, string name) row format delimited by ','; C: create table dbtest(id int, name string) row format delimited fields terminated by ','; D: create table dbtest(int id, string name) row format delimited columns fields terminated by ',';