C++
1:单选(2分8) 下列程序的输出结果是( )。X9#include <iostream.h>void main(){ int a[5]={2,4,6,8,10}; int *p=a,**q=&p; cout<<*(p++)<<','<<**q;} aqg#(?3lXnE, X.+)/sq m8l.^_v^YH ccK:A=f
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21:单选(2分N) #include <iostream.h>#include <math.h>class point{ public:point(double xx,double yy){x=xx;y=yy;}void getxy();friend double distance(point &a,point &b); private:double x,y;};void point::getxy(){ cout<<〃(〃<<x<<〃,〃<<y<<〃)〃<<endl;}double distance(point &a,point &b){ double dx=a.x-b.x; double dy=a.y-b.y; return sqrt(dx*dx+dy*dy);}void main(){point p1(3.0,4.0),p2(6.0,8.0);p1.getxy();p2.getxy();double d=distance(p1,p2);cout<<d<<endl;} yNsvF'%Q0V?3lmq]$ 2G4(gm 8@3cH;-lar$&U. 9=$POf93
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