Pick an initial point at random

main.c

@@ -11,7 +11,7 @@
 #include <string.h>
 #include <sys/time.h>
 
-enum { UNKNOWN = 0xfe };
+enum { UNKNOWN = 0xfe, KILLER = 0xfd };
 
 int main(void)
 {
@@ -28,6 +28,14 @@ int main(void)
 	puzz_t field;
 	memset(field, UNKNOWN, sizeof(field));
 
+	const int x = rand() % WIDTH;
+	const int y = rand() % HEIGHT;
+	if (probe(x, y, field) == DEAD) {
+		field[x][y] = KILLER;
+		fprintf(stderr, "Dead\n");
+	}
+
+	putchar('\n');
 	for (int y = 0; y < HEIGHT; ++y) {
 		for (int x = 0; x < WIDTH; ++x) {
 			char c;
@@ -35,6 +43,9 @@ int main(void)
 			case UNKNOWN:
 				c = '?';
 				break;
+			case KILLER:
+				c = '!';
+				break;
 			case MINE:
 				c = 'x';
 				break;