Arduino: VS Studio Code Platformio include Probleme

Compiling .pio\build\nanoatmega328\src\lcdDisplay.c.o
Compiling .pio\build\nanoatmega328\src\main.cpp.o
Archiving .pio\build\nanoatmega328\liba71\libWire.a
Archiving .pio\build\nanoatmega328\lib189\libLiquidCrystal_I2C.a
Compiling .pio\build\nanoatmega328\FrameworkArduino\IPAddress.cpp.o
Compiling .pio\build\nanoatmega328\FrameworkArduino\PluggableUSB.cpp.o
Compiling .pio\build\nanoatmega328\FrameworkArduino\Print.cpp.o
In file included from C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Print.h:27:0,
                 from C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Stream.h:26,
                 from C:\Users\lutz\.platformio\packages\framework-arduino-avr\libraries\Wire\src/Wire.h:27,
                 from include/main.h:13,
                 from include/lcdDisplay.h:12,
                 from src\lcdDisplay.c:1:
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Printable.h:25:1: error: unknown type name 'class'; did you mean 'labs'?
 class Print;
 ^~~~~
 labs
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Printable.h:33:1: error: unknown type name 'class'; did you mean 'labs'?
 class Printable
 ^~~~~
 labs
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Printable.h:34:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 {
 ^
Compiling .pio\build\nanoatmega328\FrameworkArduino\Stream.cpp.o
In file included from C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Stream.h:26:0,
                 from C:\Users\lutz\.platformio\packages\framework-arduino-avr\libraries\Wire\src/Wire.h:27,
                 from include/main.h:13,
                 from include/lcdDisplay.h:12,
                 from src\lcdDisplay.c:1:
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Print.h:37:1: error: unknown type name 'class'; did you mean 'labs'?
 class Print
 ^~~~~
 labs
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Print.h:38:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 {
 ^
In file included from C:\Users\lutz\.platformio\packages\framework-arduino-avr\libraries\Wire\src/Wire.h:27:0,
                 from include/main.h:13,
                 from include/lcdDisplay.h:12,
Compiling .pio\build\nanoatmega328\FrameworkArduino\Tone.cpp.o
                 from src\lcdDisplay.c:1:
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Stream.h:49:1: error: unknown type name 'class'; did you mean 'labs'?
 class Stream : public Print
 ^~~~~
 labs
C:\Users\lutz\.platformio\packages\framework-arduino-avr\cores\arduino/Stream.h:49:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 class Stream : public Print
              ^
In file included from include/main.h:13:0,
                 from include/lcdDisplay.h:12,
                 from src\lcdDisplay.c:1:
C:\Users\lutz\.platformio\packages\framework-arduino-avr\libraries\Wire\src/Wire.h:34:1: error: unknown type name 'class'; did you mean 'labs'?
 class TwoWire : public Stream
 ^~~~~
 labs
C:\Users\lutz\.platformio\packages\framework-arduino-avr\libraries\Wire\src/Wire.h:34:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 class TwoWire : public Stream
               ^
C:\Users\lutz\.platformio\packages\framework-arduino-avr\libraries\Wire\src/Wire.h:86:8: error: unknown type name 'TwoWire'
 extern TwoWire Wire;
Compiling .pio\build\nanoatmega328\FrameworkArduino\USBCore.cpp.o
        ^~~~~~~
In file included from include/main.h:14:0,
                 from include/lcdDisplay.h:12,
                 from src\lcdDisplay.c:1:
.pio\libdeps\nanoatmega328\LiquidCrystal_I2C/LiquidCrystal_I2C.h:55:1: error: unknown type name 'class'; did you mean 'labs'?
 class LiquidCrystal_I2C : public Print {
 ^~~~~
 labs
.pio\libdeps\nanoatmega328\LiquidCrystal_I2C/LiquidCrystal_I2C.h:55:25: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
 class LiquidCrystal_I2C : public Print {
                         ^
Compiling .pio\build\nanoatmega328\FrameworkArduino\WInterrupts.c.o
Compiling .pio\build\nanoatmega328\FrameworkArduino\WMath.cpp.o
*** [.pio\build\nanoatmega328\src\lcdDisplay.c.o] Error 1