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.

comment Signup and view all the answers

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

#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 Signup and view all the answers

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

To specify which namespace to use (D) Signup and view all the answers

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

False (B) Signup and view all the answers

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

The beginning of the function named main Signup and view all the answers

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

preprocessor Signup and view all the answers

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

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

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

To include a library or file (A) Signup and view all the answers

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

True (A) Signup and view all the answers

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

To specify which namespace to use Signup and view all the answers

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

main Signup and view all the answers

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

#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 Signup and view all the answers

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.