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#include <iostream>
using namespace std;
 
int main(int argc, char** argv) {
	switch(argc) {
		case 0:
		int j = 0;
		std::cerr << "j: " << j << "\n";
		break;
		case 1:
		int k = 1;
		std::cerr << "k: " << k << "\n";
		break;
		default:
		std::cerr << "Empty.\n";
	}
	return 0;
}

prog.cpp: In function 'int main(int, char**)':
prog.cpp:10:8: error: jump to case label [-fpermissive]
   case 1:
        ^
prog.cpp:7:7: note:   crosses initialization of 'int j'
   int j = 0;
       ^
prog.cpp:14:3: error: jump to case label [-fpermissive]
   default:
   ^
prog.cpp:11:7: note:   crosses initialization of 'int k'
   int k = 1;
       ^
prog.cpp:7:7: note:   crosses initialization of 'int j'
   int j = 0;
       ^

Standard output is empty