What is Comment in C

In C programming, comments are used to add explanatory or descriptive text within the source code that is ignored by the compiler. Comments help improve code readability and provide information to programmers or future maintainers of the code. They are not executed or interpreted as part of the program and have no impact on the program's functionality.

C supports two types of comments:

  1. Single-Line Comments: Single-line comments start with two consecutive forward slashes (//). Everything after // on the same line is considered a comment and is ignored by the compiler.

    2. // This is a single-line comment
int age = 30; // This comment provides additional information about the variable

  2. Multi-Line Comments: Multi-line comments (also known as block comments) begin with /* and end with */. Everything between these delimiters is treated as a comment and is not compiled.

    3. /* This is a
   multi-line comment */

/*
   This comment spans
   multiple lines
*/

Comments are useful for various purposes, including:

  • Providing explanations or clarifications about the code.
  • Documenting assumptions, constraints, or requirements.
  • Temporarily disabling lines of code for testing or debugging purposes.
  • Making notes or reminders for future modifications.

It is good practice to use comments to provide meaningful and relevant information in the code. Well-commented code helps improve code maintainability and assists other programmers in understanding and working with the code.

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