lt03.cpp

一、教学目的： 能理解C++中运算符重载的需要性

//***************************************
//***************************************
#include<iostream.h>
double Div(double,double);
void main()
{
  try
  {
    cout<<"7.3/2.0="<<Div(7.3,2.0)<<endl;
    cout<<"7.3/0.0="<<Div(7.3,0.0)<<endl;
    cout<<"7.3/1.0="<<Div(7.3,1.0)<<endl;
  }
catch(double)
  {
    cout<<"exception of deviding zero.\n"; 
  }
  cout<<"That is ok.\n";
}
double Div(double a,double b)
{
  if(b==0.0)
  throw b;
  return a/b;
}