[console] Print numbers directly.

CiTree.cs

@@ -1082,6 +1082,11 @@ public override CiSymbol TryLookup(string name)
 	public override CiType PtrOrSelf { get { return new CiArrayPtrType { ElementType = this.ElementType, Modifier = CiToken.ExclamationMark }; } }
 }
 
+public class CiPrintableType : CiType
+{
+	public override bool IsAssignableFrom(CiType right) { return right is CiStringType || right is CiNumericType; }
+}
+
 public class CiSystem : CiScope
 {
 	public static readonly CiType NullType = new CiType();
@@ -1110,8 +1115,9 @@ public class CiSystem : CiScope
 	public static readonly CiMember ListCount = new CiMember { Name = "Count", Type = UIntType };
 	public static readonly CiMethod ListClear = new CiMethod(CiCallType.Normal, null, "Clear");
 	public static readonly CiMethod ListRemoveAt = new CiMethod(CiCallType.Normal, null, "RemoveAt", new CiVar(IntType, "index"));
-	public static readonly CiMethod ConsoleWrite = new CiMethod(CiCallType.Static, null, "Write", new CiVar(StringPtrType, "value"));
-	public static readonly CiMethod ConsoleWriteLine = new CiMethod(CiCallType.Static, null, "WriteLine", new CiVar(StringPtrType, "value") { Value = new CiLiteral("") });
+	public static readonly CiType PrintableType = new CiPrintableType();
+	public static readonly CiMethod ConsoleWrite = new CiMethod(CiCallType.Static, null, "Write", new CiVar(PrintableType, "value"));
+	public static readonly CiMethod ConsoleWriteLine = new CiMethod(CiCallType.Static, null, "WriteLine", new CiVar(PrintableType, "value") { Value = new CiLiteral("") });
 	public static readonly CiClass ConsoleBase = new CiClass(CiCallType.Static, "ConsoleBase",
 		ConsoleWrite,
 		ConsoleWriteLine);

GenC.cs

@@ -519,6 +519,15 @@ void WriteConsoleWrite(CiExpr obj, CiExpr[] args, bool newLine)
 			Write(error ? "fprintf(stderr, " : "printf(");
 			WritePrintf(interpolated, newLine);
 		}
+		else if (args[0].Type is CiNumericType) {
+			Write(error ? "fprintf(stderr, " : "printf(");
+			Write(args[0].Type is CiIntegerType ? "\"%d" : "\"%g");
+			if (newLine)
+				Write("\\n");
+			Write("\", ");
+			args[0].Accept(this, CiPriority.Statement);
+			Write(')');
+		}
 		else if (newLine && !error) {
 			Write("puts(");
 			args[0].Accept(this, CiPriority.Statement);