code updates

.vscode/settings.json

@@ -72,7 +72,18 @@
 		"streambuf": "cpp",
 		"thread": "cpp",
 		"compare": "cpp",
-		"complex": "cpp"
+		"complex": "cpp",
+		"cinttypes": "cpp",
+		"charconv": "cpp",
+		"__undef_macros": "cpp",
+		"cassert": "cpp",
+		"ccomplex": "cpp",
+		"cerrno": "cpp",
+		"cfloat": "cpp",
+		"climits": "cpp",
+		"ctgmath": "cpp",
+		"__memory": "cpp",
+		"memory_resource": "cpp"
 	},
 	"C_Cpp.intelliSenseEngineFallback": "Disabled",
 	"cmake.configureOnOpen": true,