Parikshita questions

• Can we use main, printf,scanf for naming identifiers?
• Two different Output
• Why there is no semicolons after preprocessor directives?
• What is the output of the following code?
• Reason for the Output
• Is it possible to execute both if and else part of an if --- else control statement? [duplicate]
• What is the sizeof(main), sizeof(printf), sizeof(scanf)?
• Passing whole array to a function
• How to produce beep sound using "\a" escape character?
• What is the difference between <stdio.h> and "stdio.h"? [duplicate]

Parikshita answers