Exceptions C++ Tutorial

  1. Home
  2. C++ Tutorial
  3. Exceptions
  4. Demonstrating standard new throwing bad_alloc when memory cannot be allocated
#include 
using std::cerr;
using std::cout;
using std::endl;
#include 
using std::bad_alloc;                  
int main()
{
   double *ptr[ 50 ];
   
   try 
   {
      for ( int i = 0; i < 50; i++ ) 
      {
         ptr[ i ] = new double[ 50000000 ];
         cout << "Allocated 50000000 doubles in ptr[ " << i << " ]\n";
      }
   }catch ( bad_alloc &memoryAllocationException )
   {
      cerr << "Exception occurred: " << memoryAllocationException.what() << endl;
   }
   
   return 0;
}
Allocated 50000000 doubles in ptr[ 0 ]
Allocated 50000000 doubles in ptr[ 1 ]
Allocated 50000000 doubles in ptr[ 2 ]
Allocated 50000000 doubles in ptr[ 3 ]
Allocated 50000000 doubles in ptr[ 4 ]
Exception occurred: St9bad_alloc