: Visit the official Microchip website and select the version for your OS (Windows, Linux, or macOS).
While MPLAB X IDE is used to write code, the compilers are separate downloads. You must install the compiler after the IDE for the system to recognize the library. Why use ? xc.h library download
void main(void) TRISB = 0x00; // Set PORTB as output while(1) PORTB = 0xFF; // Turn on LEDs : Visit the official Microchip website and select
header serves as a "master header" that simplifies firmware development by automatically managing device-specific definitions. Automatic Device Inclusion xc.h library download
If you need to manually find the file after installation, it is typically located in: C:\Program Files\Microchip\xc[X]\v[version]\include /opt/microchip/xc[X]/v[version]/include Microchip Forums Note on Legacy Libraries Header files (xc.h and the like) documentation on XC8 03-May-2017 —