Create windows_epoch.c

janbodnar · Feb 1, 2016 · 9b8e6c4 · 9b8e6c4
1 parent 1d6cf6e
commit 9b8e6c4
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/datetime/windows_epoch.c b/datetime/windows_epoch.c
@@ -0,0 +1,21 @@
+#include <windows.h>
+#include <wchar.h>
+
+int wmain(void) {
+
+    FILETIME ft = {0};
+
+    GetSystemTimeAsFileTime(&ft);
+
+    LARGE_INTEGER li = {0};    
+
+    li.LowPart = ft.dwLowDateTime;
+    li.HighPart = ft.dwHighDateTime;
+
+    long long int hns = li.QuadPart;
+
+    wprintf(L"%lli hundreds of nanoseconds have elapsed " 
+        "since Windows API epoch\n", hns);
+
+    return 0;
+}