课程《面向对象程序设计》_题库列表第60页_查题网

面向对象程序设计

截止11-07，该科目累计收录道题目。

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2[应用题] #include # include void fun(char *w,int m){char s,*p1,*p2;p1=w;p2=w m-1;while(p1<> {s=*p1;*p1=*p2;*p2=s;p1 ;p2--;}}main(){ char a[10]="abcdefghi";char *p=new char[10]; strcpy(p,"student"); cout<<"compare:"<<>if(strcmp(a,p)==0)cout<<"a == p"<<>if(strcmp(a,p)>0)cout<<"a > p"<<>if(strcmp(a,p)<0)cout<<"a < p"<<>cout<<"before: ";cout<<><>cout<<><>cout<<"call fun"<<>fun(a,strlen(a));fun(p,strlen(p));cout<<"after: ";cout<<><>cout<<><>}程序运行结果为：
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- 2022-06-19 17:18:15
3[应用题] #includefloat const PI=3.14; class point { private:float x,y,area; public: point(float x1=0.0,float y1=0.0){cout<<"point构造函数被调用! ";} virtual ~point(){cout<<"point析构函数被调用! ";} virtual float getarea(){return 0.0;} }; class circle:public point {private:float r; public: circle(float x1,float y1,float Nr):point(x1,y1){r=Nr;cout<<"circle构造函数被调用! ";} ~circle(){cout<<"circle析构函数被调用! ";} float getarea(){return PI*r*r;} }; void main() {point *p,p1(3,4); p=&p1; cout<getarea()<circle c(1,1,1); p=&c; cout<getarea()<<>}程序运行结果为：
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- 2022-06-19 17:18:15
4[应用题] #include class Test;void fun1(Test t);Test fun2();class Test{public:Test(int n=1) {val=n; cout<<"Con."< Test(const Test& t) {val=t.val; cout<<"Copy con."<<> Test& operator = (Test& t) { val=t.val; cout<<"Assignment."<<> return *this;}private:int val;};void main(){Test t1(1);Test t2=t1;Test t3;t3=t1;fun1(t2);t3=fun2();}void fun1(Test t){}Test fun2(){Test t;return t;}运行结果为：
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- 2022-06-19 17:18:15
1[应用题] 请在横线中填入程序，完成如下PID控制仿真程序. (注意符号、标点符号、括号用半角） #includeclass AAA{int A,B;public:AAA(){A=100;B=200; cout<<"deflat constructing ";}AAA(int i,int j){A=i,B=j; cout<<"constructing ";}~AAA(){cout<<"destructing ";}void print( ){cout<<><><><" ";}>friend int add(AAA &s1);};int add(AAA &s1){return (s1.A s1.B);}void main() {AAA a1,*a2;int s;a2=new AAA(5,6);a1.print();a2->print();s=add(*a2);cout<<”s=”<<><>delete a2;} 运行结果是：
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- 2022-06-19 17:18:03
2[应用题] #include class Cdate{int day,month,year;public:Cdate () {day=1;month=1;year=1999;cout<<"default constructing ";}Cdate (int d,int m,int y){day=d;month=m;year=y;cout<<"constructing ";}~ Cdate (){cout<<"destructing"<<><"><><><>void print( ){cout<<><"><><>};void main(){ Cdate a1,*a2;a2=new Cdate (30,12,1996);a1.print();a2->print();delete a2;}运行结果是：<"><">
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- 2022-06-19 17:18:03
3[应用题] #include void f(int *p1, int *p2) { int *t;t=p1;p1=p2;p2=t;}main(){ int a=10,b=20;cout<<><> f(&a,&b);cout<<><>}
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- 2022-06-19 17:18:03
4[应用题] #include fun(int *s,int n1,int n2){ int t;while(n1<> {t=*(s n1);*(s n1)=*(s n2);*(s n2)=t;n1 ;n2--; } } main(){ int a[10]={1,2,3,4,5,6,7,8,9,0},i,*p=a;fun(p,0,3);fun(p 3,1,6);for(i=0;i<10;i ){ if(i%5= =0)cout<<> cout<}运行结果：
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- 2022-06-19 17:18:03
1[单选题] C 对C语言作了很多改进，即从面向过程变成为面向对象的主要原因是 A. 增加了一些新的运算符 B.允许函数重载，并允许设置缺省参数 C.规定函数说明符必须用原型 D.引进了类和对象的概念
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- 2022-06-19 17:17:57
3[单选题] 以下4个选项中，不能看作一条语句的是 A.{;} B.a=0,b=0,c=0; C.if(a>0); D.if(b==0) m=1;n=2;
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- 2022-06-19 17:17:57
5[单选题] 若已定义：int x[9], *p=x;并在以后的语句中未改变p的值，不能表示x[1]地址的表达式为 A. p 1 B.a 1 C.a D. p
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- 2022-06-19 17:17:57