Added more items to the test_data.json while testing multithreading

haversine/cpp/strtok.cpp

@@ -10,7 +10,7 @@
 #define EARTH_RADIUS_KM 6371.0
 
 #if DEBUG
-#define ITEM_COUNT 2
+#define ITEM_COUNT 4
 #else
 #define ITEM_COUNT 10000000
 #endif
@@ -95,10 +95,9 @@ int main(int argc, char *argv[]) {
          ITEM_COUNT / ((double)(end_time - start_time) / CLOCKS_PER_SEC));
 
 #if DEBUG
-  int precision = 16;
   for (int i = 0; i < ITEM_COUNT; ++i) {
-    printf("%.*f\n%.*f\n%.*f\n%.*f\n\n", precision, items[i].x0, precision,
-           items[i].y0, precision, items[i].x1, precision, items[i].y1);
+    printf("%.16f\n%.16f\n%.16f\n%.16f\n\n", items[i].x0, items[i].y0,
+           items[i].x1, items[i].y1);
   }
 #endif