default is a keyword used in a switch statement. If there is no case to switch on, default can be used optionally for non-case values.


#include <cassert>

#include <iostream>

 

int main()

{

  const int dice = 1 + (std::rand() % 6);



  switch (dice)

  {

    case 1: std::cout << "One\n"; break;

    case 2: std::cout << "Two\n"; break;

    case 3: std::cout << "Three\n"; break;

    case 4: std::cout << "Four\n"; break;

    case 5: std::cout << "Five\n"; break;

    case 6: std::cout << "Six\n"; break;

    default: assert(!"Should not get here");

  }

}

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(C++) default