题目
下列程序对加号进行了重载,划线部分的语句是______。
include<iostream.h>
include<math.h>
class Triangle
{
int x,y,z;
double area;
public:
Triangle(int i,int j,int k)
{
double s;
x=i;y=j;z=k;
s=(x+y+z)/2.0;
area=sqrt(s*(s-x)*(s-y)*(s-z));
}
void disparea()
{
cout<<"Area="<<area<<endl;
}
friend double operator+(Triangle tl,Triangle t2)
{
______
}
};
void main()
{
Triangle tl(3,4,5),t2(5,12,13);
double s;
cout<<"tl:";t1. disparea();
cout<<"t2:";t2. disparea();
s=t1+t2:
cout<<"总面积:="<<s<<endl;
}
第2题
A.A operator+(A a, A b)
B.A operator+(A &a)
C.operator+(A a)
D.A & operator+()
第3题
A.AB operator+(AB&a,AB&)
B.AB perator+(AB&)
C.opetacor+(AB A)
D.AB &operator+()
第4题
A.AB operator+(AB &a, AB &)
B.AB operator+(AB &)
C.opetacor+(AB a)
D.AB &operator+()
第5题
A.AB operator+(AB &a, AB &b);
B.AB operator+(AB &a);
C.operator+(AB a);
D.AB& operator+();
第6题
A.AB operator+(AB &a, AB &)
B.AB operator+(AB &)
C.opetacor+(AB a)
D.AB &operator+()
第7题
A.AB operator+(AB &a, AB &b);
B.AB operator+(AB &a);
C.operator+(AB a);
D.AB& operator+();
第8题
A.AB operator+(AB &a, AB &)
B.AB operator+(AB &)
C.opetacor+(AB a)
D.AB &operator+()
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