Topic 1 C++ Programming

What is the purpose of the #include <iostream> directive in a C++ program?

• To include standard input/output stream library

• To include mathematical functions

• To include file handling functions

• To include string manipulation functions

Which of the following is a valid C++ identifier?

• 123identifier

• _identifier

• identifier with spaces

• identifier-with-hyphens

Which data type is used to store integer values in C++?

• int

• float

• char

• bool

What is the output of the following C++ code snippet?

• Value of num: 10

• Value of num: 11

• 10

• Error: 'num' was not declared in this scope

Which C++ data type is used to store single characters?

• int

• float

• char

• double

What is the output of the following C++ code snippet?

• Value of y: 5.25

• 5.25

• Value of y: 5

• 5

What is the purpose of the return 0; statement in the main() function of a C++ program?

• It indicates that the program executed successfully.

• It returns the value 0 to the operating system.

• It terminates the program.

• All of the above.

Which C++ data type is used to store true/false values?

• int

• float

• bool

• char

Which of the following is NOT a valid C++ comment?

• /* This is a comment */

• // This is a comment

• # This is a comment

• /* This is a nested /* comment / /

Which of the following is a valid way to initialize a variable in C++?

• int x;

• x = 5;

• int x = 5;

• All of the above.