Understanding C Programming Basics

What is the purpose of the #include directive?

• To create a new variable in the program.

• To include the contents of a file or library in the source code.

• To comment out sections of code.

• To define a function in the source code.

What does stand for?

• Standard Data Output Header

• Standard Input Output Handler

• Standard Input Output Module

• Standard Input Output Header

How do you add a single-line comment in C?

• // This is a single-line comment

• /* This is a comment */

• # This is a comment

What is the syntax for a multi-line comment in C?

• /* This is a multi-line comment */

• # This is a comment

• // This is a single-line comment

What does the int main() function signify in a C program?

• A placeholder for user-defined functions.

• A function that returns an integer value only.

• The main function for defining variables.

• The entry point of a C program.

What is the return type of the main function in C?

• int

• float

• void

• char

What will the following code output: printf("Hello world");?

• Hello, everyone!

• Hello world

• Hello, world!

• Hello world!

How can you print multiple lines using printf?

• Use printf(line1, line2, line3);

• printf('line1 line2 line3');

• printf('line1 line2 line3');

• Use printf("line1\nline2\nline3\n");

What does the character do in a string?

• It converts a string to uppercase.

• It allows for the inclusion of special characters in a string.

• It removes whitespace from a string.

• It indicates the end of a string.

What is the output of the following code: printf("Hello\nworld");?

• Hello world!

• Hello world

• Hello world!

• Hello world