Make sure you have selected a valid PIC/AVR device in the project properties. 5. Summary Download Source: Microchip Technology Website. What you get: The full XC compiler, including xc.h . Price: Free version available.
If you are developing for PIC microcontrollers, xc.h is included with the XC compiler. xc.h library download
The xc.h header file is not a standalone library you download; rather, it is a core component of the provided by Microchip Technology . When you install an XC compiler (such as XC8, XC16, or XC32), xc.h is automatically included in the installation directory. How to Get xc.h Make sure you have selected a valid PIC/AVR
file is not a standalone library but a master header file included with the MPLAB XC compilers What you get: The full XC compiler, including xc
The Complete Guide to the XC.h Library: Download, Installation, and Setup
For fixed-size integer types (e.g., uint8_t , int16_t ). : For using bool , true , and false types.
By installing the full MPLAB XC Compiler suite, you automatically gain access to the xc.h header, providing everything you need to start programming PIC microcontrollers. If you'd like, I can: Show you for delays.
        