In C program, comments doesn’t have any use other than for better understanding of the developers of the source code in case you are writing big program and wants to remember what is the functionalities of the code blocks (functions/lines) in program. Single Line Comment — Any text on a single line after // is considered as single line comment. Multiline Comment — Any lines between “slash” “star” and “star” “slash” are considered as comments.

Implementation details

In C, you can’t have nested comments . Meaning you can’t write as, /* … some comment 1 … /* … some comment 2 …  */  */ This will not be a Valid nested comment. In C, you can write a Valid comment at any place in code, below we have given some examples of Valid comment. int main(void) { printf ("Hello World\n"); // This is Valid comment printf ("Hello World\n"); /* This is a Valid comment */ printf /* This is a valid comment */ ("Hello World\n"); /* This is multiple line Valid comment */ return 0; }

Gotchas and common issues

  • Permission checks - verify user access rights and sudo privileges before executing system-level operations.

  • Environment configuration - double-check path variables and dependency versions to prevent runtime failures.

  • Backup safeguards - maintain configuration backups before applying system or database modifications.

Following these steps ensures clean configuration and reliable execution for write comments in c program.