C++
1:单选(2分E) 下列程序的输出结果是( )。s3#include <iostream.h>void main(){ int a[5]={2,4,6,8,10}; int *p=a,**q=&p; cout<<*(p++)<<','<<**q;} '][tD:? yQPG'?BGcLZ_oL\ph uu.5CCqv &hhK2gp=
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21:单选(2分Y) #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;} @/ZAsMXc&N_ nb3W)v*B_c1*p=? _dU'o-zF=ci@_ 3-_CoZgNPsJ.sxj
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