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I'd say Amen to that!!!

the question is too vague, maybe the reason is he/she might not be able to express the problem in a proper way...
you can create a 2x2 matrix like this...

int M[2][2] = {7,10,4,11};
What logic...

I don't see anything wrong with the code...

If you had followed the previous advises you'd have reached the solution a long time ago.
You have missed only one closing bracket, ignoring other bad practices. You need to close the switch block...