Create username.c

system/username.c

@@ -0,0 +1,20 @@
+#include <windows.h>
+#include <Lmcons.h>
+#include <wchar.h>
+
+int wmain(void) {
+
+    wchar_t username[UNLEN+1];
+    DWORD len = sizeof(username) / sizeof(wchar_t);
+
+    int r = GetUserNameW(username, &len);
+
+    if (r == 0) {
+        wprintf(L"Failed to get username %ld", GetLastError());
+        return 1;
+    }
+  
+    wprintf(L"User name: %ls\n", username);
+
+    return 0;
+}