如果Number=3，判断下列命题的真假。 If Number = 3, judge the truth of the following propositions. （Number*Number)＞=（2*Number)
如果Number=3，判断下列命题的真假。 If Number = 3, judge the truth of the following propositions. （Number*Number)＞=（2*Number)
参考答案和解析
正确
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2． Look ! __________ children__________ playing on the playground．A． The number of，areB． the number of，isC． a number of，areD． a number，is
有下列程序,在横线添加;includeusing namespace std;class TestClass{public:TestCla 有下列程序，在横线添加； #include＜iostream＞ using namespace std; class TestClass { public: TestClass (int n){number=n;} ______//拷贝构造函数 ～TestClass(){} private: int number; }; TestClass fun(TestClass p) { TestClass temp(P); return temp; } int main() { TestClsss obj1(10),obj2(0); TestClass obj3(obj1); obj2=fun(obj3); return 0; }A．TestClass(TestClass other){number=other.number;}B．TestClass(TestClass other){number=other.number;}C．TestClass(TestClass other){number;}D．TestClass(other){number=other.number;}
有以下程序,在横线应添加()。includeusing namespace std;class TestClass{public:Tes 有以下程序，在横线应添加( )。 #include＜iostream＞ using namespace std; class TestClass { public: TestClass(int n){number=n;} ______∥拷贝构造函数 ～TestClass(){} private: int number; }: TestClass fun(TestClass P) { TestClass temp(p); return temp; } int main() { TestClass obj1(10), obj2(0)； TestClass obj3(obj1); obj2=fun(obj3); return 0; }A．TestClass(TestClass other){number=other.number;}B．TestClass(TestClass other){number=other.number;}C．TestClass(TestClass other){number;)D．TestClass(other){number=other.number;}
下列程序的输出结果是【 】。 includeclass MyClass{public: int number; void set(in 下列程序的输出结果是【 】。include＜iostream. h＞class MyClass{public:int number;void set(int i);};int number=3;void MyClass: :set (int i){number=i;}void main( ){MyClass my1；int number=10;my1.set(5),cout＜＜my1, number＜＜',';my1.set(number);cout＜＜my1.number＜＜',';my1.set(: :number);cout＜＜my1.number＜＜'.';}
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阅读下面程序import javax.swing.JOptionPane；public class Comparison{public static void main(String args[]){String firstNumber, //用户输入第1个数据变量second Number, //用户输入第2个数据变量result； //输出结果变量int number1， //用于比较的第1个数number2； //用于比较的第2个数//用户输入第1个数据的字符串firstNumber=JOptionPane. showInputDialog(“输入第1个整数：”)；//用户输入第2个数据的字符串secondNumber=JOptionPane.showlnputDialog(“输入第2个整数：”)；//将字符串转换为整数类型number1=Integer.parseInt(firstNumber)；number2=Integer.parseInt(secondNumber)；//初始化结果变量___________________;//比较两个数据if(number1＝number2)result += number1 +" =" + number2;if(number1 != number2 )result += numberl +" !=" + number2;if( number1 ＜ number2 )result = result + "\n" + numberl +" ＜" + number2;if(number1 ＞ number2 )result = result + "\n" + number1 + "＞" + number2;if( number1 ＜= number2 )result = result + "\n" + number1 +" ＜=" + number2;if (number1 ＞= number2 )result = result + "\n" + number1 + "＞=" + number2;//显示结果JOptionPane.showMessageDialog(null,result," 比较结果",JOptionPane. INFORMATION_MESSAGE);System.exit(0);}}为使程序能正确运行并得到合理的输出结果，初始化结果变量语句(下划线处)应是A．result = ""B．result = nullC．result = number1D．result = number2
阅读下面程序import javax.swing．JOptionPane；public class Comparison {public static void main(String args[]) {String firstNumber， //用户输入第1个数据变量secondNumber， //用户输入第2个数据变量result； //输出结果变量int number1， //用于比较的第1个数number2； //用于比较的第2个数//用户输入第1个数据的字符串firstNuinber=JOptionPane.showInputDialog("输入第1个整数:")；//用户输入第2个数据的字符串secondNumber=JOptionPane.showInputDialog("输入第2个整数:")；//将字符串转换为整数类型number1=Integer.parseInt(firstNumber)；number2=Integer.parseInt(secondNumber)；//初始化结果变量______//比较两个数据if(number1==number2)result+=number1+"=="+number2；if(number1! =number2) result+=number1+"!="+number2；if(number1＜number2) result=result+"\n"+number1+"＜"+number2；if(number1＞number2) result=result+"\n"+number1+"＞"+number2；if(number1＜=number2) result=result+"\n"+number1+"＜="+number2；if(number1＞=number2) result=result+"\n"+number1+"＞="+number2：//显示结果JOptionPane.showMessageDialog(null,result."比较结果"，JOptionPane.INFORMATION_MESSAGE)；System．exit(0)；}}为使程序能正确运行并得到合理的输出结果，初始化结果变量语句(下画线处)应是A．result=" "；B．result=nullC．result=number1D．result=number2
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