Understanding the main() Function in C
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Questions and Answers

What is the purpose of main() in a C program?

  • To serve as the entry point of the program and contain a set of statements (correct)
  • To return a non-integer value indicating success or failure
  • To execute only if there is an error in the program
  • To declare variables for the entire program
  • What type of value does the main() function in C always return?

  • String
  • Integer (correct)
  • Void
  • Boolean
  • What does returning a non-zero number from main() indicate?

  • Success
  • String
  • Void
  • Failure (correct)
  • In what situation can main() in C return nothing?

    <p>When preceded by the keyword 'void'</p> Signup and view all the answers

    What does enclosing statements within braces {} indicate in C?

    <p>A block of code</p> Signup and view all the answers

    Study Notes

    Main Function in C

    • The main function is the entry point of a C program, where the program starts executing.

    Return Value of Main

    • The main function in C always returns an integer value (int).

    Return Value Indication

    • Returning a non-zero number from main() indicates that the program has encountered an error or an abnormal termination.

    Void Return

    • In C, main() can return nothing (i.e., void) when the program terminates normally, but it's not a recommended practice.

    Braces in C

    • Enclosing statements within braces {} in C indicates a compound statement or a block, which is used to group multiple statements together.

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    Description

    Learn about the purpose and intricacies of the main() function in C programming. Explore how main() functions as a container for a set of statements and the rules associated with it.

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