✨ A1

A1/random_ids.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "record.h"
+
+int main(int argc, char** argv) {
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s FILE\n", argv[1]);
+    return 1;
+  }
+
+  int n;
+  struct record* rs = read_records(argv[1], &n);
+
+  if (!rs) {
+    fprintf(stderr, "Failed to read records from %s\n", argv[1]);
+    return 1;
+  }
+
+  while (1) {
+    if (printf("%ld\n", (long)rs[rand() % n].osm_id) == 0) {
+      break;
+    }
+  }
+}