bad_alloc in C++

bad_alloc: This is available in the file new. Type of the exceptions thrown by the standard definitions of operator new and operator new[] when they fail to allocate the requested storage space. This is used for exception handling.

Note: Exception is possibly thrown by new.

Approach

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{

    try
    {
        char *arr = new char[100];
    }
    catch (const std::bad_alloc &e)
    {
        std::cerr << "Error has occured " << e.what() << '\n';
    }

    return 0;
}

If the new does not allocate the memory to the array, then it will throw an exception and output: Error has occurred bad_alloc.

Otherwise, it will allocate memory for the array.