IT. Expert System.

default: labels are permitted in statement.Any statement (typically a compound statement).

Syntax:

case 1:  command1;
         command2;
         break;

default: command1;
         command2;
         break;

Example:

switch(1) {
                  case 1  :    int x = 0; 		// initialization
           	         std::cout << x << '\n';
         	         break;
                 default: 		                          // compilation error: jump to default: would enter                                  			                         // the scope of 'x' without initializing it
                                   std::cout << "default\n";
                                   break;
}

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