Ino file compiled no problem and downloaded to the board is normal, wanted to establish a library function, convenient later call into the. CPP and h a compile error, check for many times, Internet and database function related posts are also seen, Arduino.cc of the tutorial repeatedly read several times, about books read, or cannot be solved.
The following is the 1.6.8 IDE error message:
Arduino:1.6.8 (Windows 7), 开发板："Arduino Nano, ATmega328"
In file included from D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Print.h:27:0,
from D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Stream.h:26,
from D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\libraries\Wire\src/Wire.h:26,
from D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:3:
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Printable.h:25:1: error: unknown type name 'class'
class Print;
^
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Printable.h:33:1: error: unknown type name 'class'
class Printable
^
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Printable.h:34:1: error: expected '=', ',', ';', 'asm' or 'attribute' before '{' token
{
^
In file included from D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Stream.h:26:0,
from D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\libraries\Wire\src/Wire.h:26,
from D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:3:
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Print.h:34:1: error: unknown type name 'class'
class Print
^
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Print.h:35:1: error: expected '=', ',', ';', 'asm' or 'attribute' before '{' token
{
^
In file included from D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\libraries\Wire\src/Wire.h:26:0,
from D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:3:
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Stream.h:49:1: error: unknown type name 'class'
class Stream : public Print
^
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\cores\arduino/Stream.h:49:14: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
class Stream : public Print
^
In file included from D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:3:0:
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\libraries\Wire\src/Wire.h:33:1: error: unknown type name 'class'
class TwoWire : public Stream
^
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\libraries\Wire\src/Wire.h:33:15: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
class TwoWire : public Stream
^
D:\arduino-1.6.8-windows\arduino-1.6.8\hardware\arduino\avr\libraries\Wire\src/Wire.h:82:1: error: unknown type name 'TwoWire'
extern TwoWire Wire;
^
In file included from D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:4:0:
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811/CCS811.h:41:1: error: unknown type name 'class'
class CCS811
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811/CCS811.h:42:1: error: expected '=', ',', ';', 'asm' or 'attribute' before '{' token
{
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:7:7: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
CCS811::CCS811()
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:14:13: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
void CCS811::begin() {
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:19:13: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
bool CCS811::_HardWare_ID(){
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:39:13: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
bool CCS811::_Valid_Firmware(){
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:62:14: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
void CCS811::_Boot_to_Firmware_Mode(){
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:70:13: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
void CCS811::_Measure_Mode(){
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:83:21: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
unsigned int CCS811::Read_Value(CCS811MeasureType type){
^
D:\arduino-1.6.8-windows\arduino-1.6.8\libraries\CCS811\CCS811.c:137:13: error: expected '=', ',', ';', 'asm' or 'attribute' before ':' token
void CCS811::init_CCS811(){
^
exit status 1
Error compiling for board Arduino Nano.
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