shiti4_5_2.cpp

为初学者提供的最佳的C++程序设计源程序库

#include<iostream.h>
class tirangle
{
  int height,base;
public:
  tirangle(int h,int b){height=h;base=b;}
  friend ostream& operator<<(ostream& stream,tirangle ob);
};
   //画一直角三角形
ostream& operator<<(ostream& stream,tirangle ob)
{
  int i,j,h,k;
  i=j=ob.base-1;
  for(h=ob.height-1;h;h--)
  {
    for(k=i;k;k--) stream<<' ';
    stream<<'*';
    if(j!=i)
    {
      for(k=j-i-1;k;k--)stream<<' ';
	  stream<<'#';
    }
    i--;
    stream<<'\n';
  }
  for(k=0;k<ob.base;k++)stream<<'@';
  stream<<'\n';
  return stream;
}
main()
{
  tirangle t1(5,5),t2(10,10),t3(12,12);
  cout<<t1;
  cout<<endl<<t2<<endl<<t3;
  return 0;
}