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5 Questions

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C Programming Basics: Hello World

Created by

@BrainyReal

Questions and Answers

What does the line '#include <stdio.h>' accomplish in a C program?

It defines the main function of the program.

It initializes the console input mechanisms.

It includes the standard input-output library for functions like printf. (correct)

It specifies the standard error library for file handling.

What is the purpose of the 'return 0;' statement in the main function?

It indicates successful termination of the program. (correct)

It prints a message to the console.

It interrupts the execution of the program.

It defines the end of the main function.

Which statement is true about the execution of a C program?

Execution starts from the first line of the included libraries.

Execution of the program starts from the main function. (correct)

Execution starts from any function declared in the program.

Execution always begins from the printf statement.

In the statement 'printf("Hello, World!\n");', what does the '\n' signify?

<p>It moves the cursor to the next line after printing.</p> Signup and view all the answers

What will happen if 'return 0;' is omitted from the main function?

<p>The program may still function correctly but might not indicate success.</p> Signup and view all the answers

Study Notes

Hello World Structure in C

The #include <stdio.h> directive imports the standard input-output library that allows the use of functions like printf.
Execution of a C program starts from the int main() function, which serves as the entry point for the program.
The printf("Hello, World!\n"); function call outputs the string "Hello, World!" to the console. The \n character creates a line break, moving the cursor to the next line.
Including return 0; at the end of the main function signifies a successful termination of the program. The value 0 is returned to the operating system as a status code.

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Description

This quiz focuses on the essential structure of a C program, particularly the 'Hello, World!' example. It covers key components such as including libraries and the main function execution. Test your understanding of the basic syntax and functionality in C programming.