diff --git a/Canon.Core/SyntaxNodes/AddOperator.cs b/Canon.Core/SyntaxNodes/AddOperator.cs
index 88a3320..4b974d2 100644
--- a/Canon.Core/SyntaxNodes/AddOperator.cs
+++ b/Canon.Core/SyntaxNodes/AddOperator.cs
@@ -15,15 +15,18 @@ public class AddOperator : NonTerminatedSyntaxNode
 
     public override void GenerateCCode(CCodeBuilder builder)
     {
-        var operatorType = Children[0].Convert<TerminatedSyntaxNode>().Token.
-            Convert<OperatorSemanticToken>().OperatorType;
-        if (operatorType == OperatorType.Plus)
+        var token = Children[0].Convert<TerminatedSyntaxNode>().Token;
+        if (token.TokenType == SemanticTokenType.Operator)
         {
-            builder.AddString(" +");
-        }
-        else if (operatorType == OperatorType.Minus)
-        {
-            builder.AddString(" -");
+            var operatorType = token.Convert<OperatorSemanticToken>().OperatorType;
+            if (operatorType == OperatorType.Plus)
+            {
+                builder.AddString(" +");
+            }
+            else if (operatorType == OperatorType.Minus)
+            {
+                builder.AddString(" -");
+            }
         }
         else
         {
diff --git a/Canon.Core/SyntaxNodes/MultiplyOperator.cs b/Canon.Core/SyntaxNodes/MultiplyOperator.cs
index f0793ed..dcc4b1e 100644
--- a/Canon.Core/SyntaxNodes/MultiplyOperator.cs
+++ b/Canon.Core/SyntaxNodes/MultiplyOperator.cs
@@ -25,7 +25,7 @@ public class MultiplyOperator : NonTerminatedSyntaxNode
             }
             else if (operatorType == OperatorType.Divide)
             {
-                //实数除法，需要将操作数强转为float
+                //实数除法，需要将操作数强转为double
                 builder.AddString(" /(double)");
             }
         }
diff --git a/Canon.Core/SyntaxNodes/ProgramStruct.cs b/Canon.Core/SyntaxNodes/ProgramStruct.cs
index ed0922d..4793e27 100644
--- a/Canon.Core/SyntaxNodes/ProgramStruct.cs
+++ b/Canon.Core/SyntaxNodes/ProgramStruct.cs
@@ -24,7 +24,7 @@ public class ProgramStruct : NonTerminatedSyntaxNode
 
     public override void GenerateCCode(CCodeBuilder builder)
     {
-        builder.AddString("#include <PascalCoreLib.h> #include <stdbool.h>");
+        builder.AddString("#include <stdbool.h>");
         Body.GenerateCCode(builder);
     }
 }