Create get_time_zone.c

datetime/get_time_zone.c

@@ -0,0 +1,20 @@
+#include <windows.h>
+#include <wchar.h>
+
+int wmain(void) {
+
+    TIME_ZONE_INFORMATION tzi = {0};
+    
+    int r = GetTimeZoneInformation(&tzi);
+
+    if (r == TIME_ZONE_ID_INVALID) {
+
+        wprintf(L"Failed to get time zone %d", GetLastError());
+        return 1;
+    }
+
+    wprintf(L"Time zone: %ls\n", tzi.StandardName);
+    wprintf(L"The bias is: %ld minutes\n", tzi.Bias);
+
+    return 0;
+}