C++ Program Structure and Basics

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Questions and Answers

What is the purpose of the line '#include' in a C++ program?

  • To specify the namespace to use
  • To include a library or header file (correct)
  • To start the execution of the program
  • To define a function

The 'using namespace std;' line is required to start the execution of a C++ program.

False (B)

What is the purpose of the 'int main()' line in a C++ program?

It declares the beginning of the main function.

The '//' symbol is used to insert a _______________________ in a C++ program.

<p>comment</p> Signup and view all the answers

Match the following lines from a C++ program with their purposes:

<p>#include = To include a library or header file using namespace std; = To specify the namespace to use int main() = To declare the beginning of the main function cout = To output data to the console</p> Signup and view all the answers

What is the purpose of the 'using namespace std;' line in a C++ program?

<p>To specify which namespace to use (D)</p> Signup and view all the answers

The '//' symbol is used to start the execution of a C++ program.

<p>False (B)</p> Signup and view all the answers

What does the 'int main()' line indicate in a C++ program?

<p>The beginning of the function named main</p> Signup and view all the answers

The '#include' directive is a type of _______________________ directive.

<p>preprocessor</p> Signup and view all the answers

Match the following lines from a C++ program with their purposes:

<p>// sample C++ program = Comment #include = Preprocessor directive using namespace std; = Specify namespace int main() = Beginning of function named main</p> Signup and view all the answers

What is the purpose of the '#include' directive in a C++ program?

<p>To include a library or file (A)</p> Signup and view all the answers

The '//' symbol is used to insert a comment in a C++ program.

<p>True (A)</p> Signup and view all the answers

What is the purpose of the 'using namespace std;' line in a C++ program?

<p>To specify which namespace to use</p> Signup and view all the answers

The 'int main()' line indicates the beginning of the _______________________ function in a C++ program.

<p>main</p> Signup and view all the answers

Match the following lines from a C++ program with their purposes:

<p>#include = To include a library or file using namespace std; = To specify which namespace to use int main() = To indicate the beginning of the main function // = To insert a comment</p> Signup and view all the answers

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Study Notes

C++ Program Structure

  • A C++ program typically starts with a comment, which is denoted by //.
  • The #include directive is a preprocessor directive that tells the compiler to include a file.

Namespace and Main Function

  • The using namespace std; line specifies which namespace to use in the program.
  • The int main() line marks the beginning of the function named main, which is the entry point of the program.
  • The { symbol denotes the beginning of a block of code for the main function.

Output Statement

  • The cout statement is used to output text to the console.

C++ Program Structure

  • A C++ program typically starts with a comment, which is denoted by //.
  • The #include directive is a preprocessor directive that tells the compiler to include a file.

Namespace and Main Function

  • The using namespace std; line specifies which namespace to use in the program.
  • The int main() line marks the beginning of the function named main, which is the entry point of the program.
  • The { symbol denotes the beginning of a block of code for the main function.

Output Statement

  • The cout statement is used to output text to the console.

C++ Program Structure

  • A C++ program typically starts with a comment, which is denoted by //.
  • The #include directive is a preprocessor directive that tells the compiler to include a file.

Namespace and Main Function

  • The using namespace std; line specifies which namespace to use in the program.
  • The int main() line marks the beginning of the function named main, which is the entry point of the program.
  • The { symbol denotes the beginning of a block of code for the main function.

Output Statement

  • The cout statement is used to output text to the console.

C++ Program Structure

  • A C++ program typically starts with a comment, which is denoted by //.
  • The #include directive is a preprocessor directive that tells the compiler to include a file.

Namespace and Main Function

  • The using namespace std; line specifies which namespace to use in the program.
  • The int main() line marks the beginning of the function named main, which is the entry point of the program.
  • The { symbol denotes the beginning of a block of code for the main function.

Output Statement

  • The cout statement is used to output text to the console.

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