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MPLAB XC8 C Compiler User’s Guide for PIC MCU
MPLAB XC8 C Compiler User’s Guide for PIC MCU
  1. Home
  2. 3 How Tos
  3. 3.3 Writing Source Code
  4. 3.3.1 C Language Specifics
  • Notice to Development Tools Customers
  • 1 Preface
  • 2 Compiler Overview
  • 3 How Tos
    • 3.1 Installing and Activating the Compiler
    • 3.2 Invoking the Compiler
    • 3.3 Writing Source Code
      • 3.3.1 C Language Specifics
        • 3.3.1.1 When Should I Cast Expressions?
        • 3.3.1.2 Can Implicit Type Conversions Change The Expected Results Of My Expressions?
        • 3.3.1.3 How Do I Enter Non-English Characters Into My Program?
        • 3.3.1.4 How Can I Use A Variable Defined In Another Source File?
        • 3.3.1.5 How Can I Use A Function Defined In Another Source File?
      • 3.3.2 Device-Specific Features
      • 3.3.3 Memory Allocation
      • 3.3.4 Variables
      • 3.3.5 Functions
      • 3.3.6 Interrupts
      • 3.3.7 Assembly Code
    • 3.4 Getting My Application To Do What I Want
    • 3.5 Understanding the Compilation Process
    • 3.6 Fixing Code That Does Not Work
  • 4 Command-line Driver
  • 5 C Language Features
  • 6 Macro Assembler
  • 7 Linker
  • 8 Utilities
  • 9 Library Functions
  • 10 Error and Warning Messages
  • 11 Implementation-Defined Behavior
  • 12 Document Revision History
  • Microchip Information

3.3.1 C Language Specifics

This section discusses commonly asked source code issues that directly relate to the C language itself.

  • When Should I Cast Expressions?
  • Can Implicit Type Conversions Change the Expected Results of My Expressions?
  • How Do I Enter Non-English Characters Into My Program?
  • How Can I Use a Variable Defined in Another Source File?
  • How Can I Use a Function Defined in Another Source File?

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.

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