Following code causes output "Strange" instead of the expected "A":

#include <stdio.h>

typedef enum {a, b, c} k;

k s;

int main()
{
	s = a;
	switch(s)
	{
	a:
		printf("A\n");
	b:
		printf("B\n");
	c:
		printf("C\n");
	default:
		printf("Strange\n");
	}
}