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24、如果Number=7，下列命题为真。 If Number = 7, point out the truth or false of the following expressions. Sqrt（Number*Number ) == Int（Sqrt（Number*Number))
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单选题Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table?（）A
CREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) NOT NULL CONSTRAINT emp_deptno_fk FOREIGN KEY deptno REFERENCES dept deptno);B
CREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));C
CREATE TABLE EMP (empno NUMBER(4) ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk REFERENCES dept (deptno) FOREIGN KEY (deptno));D
CREATE TABLE EMP (empno NUMBER(4), ename VARCNAR2(35), deptno NUMBER(7,2) FOREIGN KEY CONSTRAINT emp deptno fk REFERENCES dept (deptno));
考题
单选题1）#include
2）#include
3）using namespace std；
4）double max（double x，doubley）
5）{
6）if（xy）
7）return x；
8）else
9）return y；
10）}
11）int main（）
12）{
13）doublea，b，c；
14）cout a b；
16）c=max（a，b）；
17）cout " the squart of max imum=" sqrt（ c ）；
18）}
执行完第14行后，命令提示符窗口中光标的位置在：（）A
input two number：前面B
input two number：后面C
input two number：下一行首列D
不确定
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