- fix stdio import for sprintf

- ignore Visual Studio code settings

.gitignore

@@ -33,3 +33,6 @@
 *.su
 
 build
+
+# VS Code
+.vscode
\ No newline at end of file

src/libretro.c

+#include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <assert.h>