Implement probes

puzz.h

@@ -15,8 +15,10 @@
 enum { MINE = 0xff };
 
 typedef uint8_t puzz_t[WIDTH][HEIGHT];
+typedef enum { DEAD, OK } status_t;
 
 void gen(void);
 void print(void);
+status_t probe(int x, int y, puzz_t out);
 
 #endif