·ÖÎöÒÔϳÌÐòµÄÖ´Ðнá¹û #include<iostream.h> class Sample { int x,y; public: Sample(){x=y=0;} Sample(int i,int j){x=i;y=j;} void copy(Sample &s); void setxy(int i,int j){x=i;y=j;} void print(){cout<<"x="<<x<<",y="<<y<<endl;} }; void Sample::copy(Sample &s) { x=s.x;y=s.y; } void func(Sample s1,Sample &s2) { s1.setxy(10,20); s2.setxy(30,40); } void main() { Sample p(1,2),q; q.copy(p); func(p,q); p.print(); q.print(); } ½â£º ±¾Ìâ˵Ã÷¶ÔÏóÒýÓÃ×÷Ϊº¯Êý²ÎÊýµÄ×÷Óá£SampleÀàÖеÄcopy()³ÉÔ±º¯Êý½øÐжÔÏó¿½±´¡£ÔÚmain()ÖÐÏȽ¨Á¢¶ÔÏópºÍq£¬pÓëq¶ÔÏóµÄx,yÖµÏàͬ,µ÷ÓÃfunc()º¯Êý£¬ÓÉÓÚµÚ2¸ö²ÎÊýΪÒýÓÃÀàÐÍ£¬¹Êʵ²Î·¢Éú¸Ä±ä£»¶øµÚ1¸ö²ÎÊý²»ÊÇÒýÓÃÀàÐÍ£¬Êµ²Î²»·¢Éú¸Ä±ä¡£ËùÒÔÊä³öΪ£º x=1,y=2 x=30,y=40 |