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下面程序的输出结果是【】。include include class point{double x; double y;
下面程序的输出结果是【 】。
include ＜iostream.h＞
include ＜math.h＞
class point
{
double x;
double y;
public:
point(double a, double b)
{
x=a;
y=b;
}
friend double distance(point a, point b) ;
};
double distance(point a, point b)
{
return sqrt ((a. x-b.x) * (a. x-b.x)+ (a. y-b. y) * (a. y-b. y) );
}
void main()
{
point p1(1,2);
point p2(5,2);
cout＜＜distance(p1,p2)＜＜end1;
}
参考答案
更多 “ 下面程序的输出结果是【】。include include class point{double x; double y; 下面程序的输出结果是【 】。include ＜iostream.h＞include ＜math.h＞class point{double x;double y;public:point(double a, double b){x=a;y=b;}friend double distance(point a, point b) ;};double distance(point a, point b){return sqrt ((a. x-b.x) * (a. x-b.x)+ (a. y-b. y) * (a. y-b. y) );}void main(){point p1(1,2);point p2(5,2);cout＜＜distance(p1,p2)＜＜end1;} ” 相关考题
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