C++ Tutorial/Exceptions/bad alloc Exception — различия между версиями
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Версия 14:21, 25 мая 2010
Demonstrating standard new throwing bad_alloc when memory cannot be allocated
#include <iostream>
using std::cerr;
using std::cout;
using std::endl;
#include <new>
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
