尝试用纯 c 编程 arduino，得到以下错误：预期的"="、""、";"，'asm'或"打印"之前的'__attribute__'|

我在Arduino IDE中编写了一个程序(它涉及一些矩阵数学(。但是，我想尝试一些编译器选项。似乎没有一个简单的方法可以做到这一点，所以我转而尝试使用 CodeBlock 编写一个纯 c 程序。我让闪烁示例工作，但我想使用串行库。我只是找到了h和cpp文件，并将它们复制到包含我的main.c文件的文件夹中。(我不知道这是否是正确的方法(。

现在我收到错误消息： Print.h|37|错误：在"打印"之前应为"="、"、";"、"asm"或">属性"|

它抱怨的代码是我复制的标准类之一。

/*
Print.h - Base class that provides print() and println()
Copyright (c) 2008 David A. Mellis.  All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
#ifndef Print_h
#define Print_h
#include <inttypes.h>
#include <stdio.h> // for size_t
#include "WString.h"

#define DEC 10
#define HEX 16
#define OCT 8
#ifdef BIN // Prevent warnings if BIN is previously defined in "iotnx4.h" or similar
#undef BIN
#endif
#define BIN 2
class Print
{
private:
int write_error;
size_t printNumber(unsigned long, uint8_t);
size_t printFloat(double, uint8_t);
protected:
void setWriteError(int err = 1) { write_error = err; }
public:
Print() : write_error(0) {}
int getWriteError() { return write_error; }
void clearWriteError() { setWriteError(0); }
virtual size_t write(uint8_t) = 0;
size_t write(const char *str) {
if (str == NULL) return 0;
return write((const uint8_t *)str, strlen(str));
}
virtual size_t write(const uint8_t *buffer, size_t size);
size_t write(const char *buffer, size_t size) {
return write((const uint8_t *)buffer, size);
}
// default to zero, meaning "a single write may block"
// should be overriden by subclasses with buffering
virtual int availableForWrite() { return 0; }
size_t print(const __FlashStringHelper *);
size_t print(const String &);
size_t print(const char[]);
size_t print(char);
size_t print(unsigned char, int = DEC);
size_t print(int, int = DEC);
size_t print(unsigned int, int = DEC);
size_t print(long, int = DEC);
size_t print(unsigned long, int = DEC);
size_t print(double, int = 2);
size_t print(const Printable&);
size_t println(const __FlashStringHelper *);
size_t println(const String &s);
size_t println(const char[]);
size_t println(char);
size_t println(unsigned char, int = DEC);
size_t println(int, int = DEC);
size_t println(unsigned int, int = DEC);
size_t println(long, int = DEC);
size_t println(unsigned long, int = DEC);
size_t println(double, int = 2);
size_t println(const Printable&);
size_t println(void);
virtual void flush() { /* Empty implementation for backward compatibility */ }
};
#endif

我怀疑问题出现是因为编译器将代码视为 c 代码，而它是 c++ 代码。我使用 GNU AVR GCC 编译器，它应该能够同时执行 C 和 C++ 代码。我是否需要在我的标头包含中添加一些内容以表明它涉及 c++ 代码？