更多"有以下程序:#include <iostream>using name"的相关试题:
[单项选择]有以下程序
#include <iostream>
using namespace std:
class Baseprivate:
char c;
public:
Base(char n) :c(n)
~Base ( )
cout<<c;
;
class Derived : public Baseprivate:
char c;
public:
Derived(char n):Base(n+1),c(n)
~Derived( )
cout<<c;
;
int main( ) Derived obj('x');
return 0; 执行后的输出结果是
A. xy
B. yx
C. x
D. y
[单项选择]有如下程序:
#include <iostream>
using namespace std;
class Baseprivate:
char c;
public:
Base(char n):c(n)
~Base( )
cout<<c;
;
class Derived: public Baseprivate:
char c;
public:
Derived(char n):Base(n+1),c(n)
~Derived( )
cout<<c;
;
int main( ) Derived obj('x');
return 0;
执行上面的程序将输出()。
A. xy
B. yx
C. x
D. y
[单项选择]有以下程序
#include <iostream>
using namespace std;
class Complex
public:
Complex(double r=0,double i=0):re(r),im(i)
double real( ) const return re;
double irnag( ) const return im;
Complex operator+(Complex c)const
( return Complex(re+c.re,im+c.im),
private:
double re,im;
;
int main( )
Complex a=Complex(1,1)+Complex(5);
cout<<a.real( )<<'+'<<a.imag( )<<'i'<<endl;
return 0;
程序执行后的输出结果是( )。
A. 6+6i
B. 6+1i
C. 1+6i
D. 1+1i