fixed index errors

data/1.C语言初阶/3.运算符与表达式/config.json

@@ -46,8 +46,6 @@
       }
     }
   ],
-  "export": [
-    "basic_data_types.json"
-  ],
+  "export": [],
   "node_id": "569d5e11c4fc5de7844053d9a733c5e8"
 }
\ No newline at end of file

data/1.C语言初阶/4.语句与控制流/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "precedence.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/2.C语言中阶/3.指针/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "vla.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/2.C语言中阶/4.字符串/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "pointers_2_func.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/3.C语言高阶/2.联合体与枚举类型/config.json

@@ -5,7 +5,5 @@
     "C语言"
   ],
   "children": [],
-  "export": [
-    "linked_list.json"
-  ]
+  "export": []
 }
\ No newline at end of file

data/3.C语言高阶/3.位运算/config.json

@@ -5,7 +5,5 @@
     "枚举类型"
   ],
   "children": [],
-  "export": [
-    "enum.json"
-  ]
+  "export": []
 }
\ No newline at end of file