exceptprototypes.cpp

来自「C++ sample code, for the book: C++ blac」· C++ 代码 · 共 33 行

#include <iostream>
#include <string>
using namespace std;

float divider(float op1, float op2) throw (string)
{
    if(op2 != 0)
        return op1 / op2;
    else
        throw string("Error: division by zero.");
}

int main ()
{
   float op1, op2;

   cout << "Enter the two floating point numbers to divide: ";
   cin >> op1 >> op2;

   try
   {
        float result = divider(op1, op2);
        cout << op1 << "/" << op2 << " = " << result << endl;
   }
   catch (string s)
   {
      cout << s << endl;
   }

   return 0;
}