填空题 [程序]
#include＜iostream.h＞
int n1=0,n2=0,n3=0,n4=0;
class T
{
public:
T(int a)
{
ia=a;
n1 ++;
}
void print()
{
cout＜＜ia＜＜endl;
}
int Getia()
{
return ia;
}
private:
int ia;
};
class S1:public T
{
int x;
public:
S1(int a,int c):T(a)
{
x=c;
n2 ++;
}
void printS1()
{
cout＜＜Getia()＜＜"/t"＜＜x＜＜endl;
}
};
class S2:public T
{
int y;
public:
S2(int a):T(10)
{
y=a;
n3 ++;
}
void printS2()
{
cout＜＜Getia()＜＜"/t"＜＜y＜＜endl;
}
};
class S:public S1,public S2
{
int xx;
public:
S(int a,float b,int c,int d):S1(a,b),S2(c)
{
xx=d;
n4 ++;
}
void prints()
{
cout＜＜xx＜＜endl;
}
};
void main(void)
{
T t1(2);
S1 t2(3,4);
S2 t3(5);
S t4(6,7,8,9),*p;
p=&t4;
p-＞printS();
p-＞printS1();
p-＞printS2();
cout＜＜n1＜＜"/t"＜＜n2＜＜"/t"＜＜n3＜＜"/t"＜＜n4＜＜endl;
}
执行以上程序后，输出的第二行是 1，第三行是 2，第四行是 3。