Programmer-defined Data Types

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

It allows the program to use input and output functionalities.

What data type is used to hold a student's age in the provided C++ code?

Int (integer) is used to hold the student's age.

How do you prompt a user for input in C++?

Use 'cout' followed by the message to display, such as 'cout << "Enter age: ";'.

What does the 'cin' keyword do in a C++ program?

It reads input from the user and stores it in a variable.

What is the difference between single quotes and double quotes in C++?

Single quotes are used for character literals (e.g., 'A'), while double quotes are for string literals (e.g., "hello").

What do you need to include in your C++ code to use strings?

You need to include the header file ‘#include <string>’.

How would you declare a string constant in C++?

Use the 'const' keyword, e.g., 'const string BOOK_TITLE = "PROGRAMMING IN C++";'

What is the purpose of the modulus operator (%) in C++?

The modulus operator returns the remainder of a division operation.

What will the expression '7%2' return?

It will return 1.

What is the highest precedence operation in C++?

Unary operations (like negation) have the highest precedence.

How is the expression 'Avgheight = shortest + tallest / 2.0' evaluated?

It is evaluated as 'avgHeight = shortest + (tallest / 2.0);' due to operator precedence.

If two arithmetic operators have the same precedence, how are they evaluated?

They are evaluated from left to right.

What is the value of the expression 'Answer = 1 - 2 + 3'?

The value is 2, as it is grouped as '(1 - 2) + 3'.

What type of division does '7.0/2.0' perform and what is the result?

It performs floating-point division, resulting in 3.5.

What is a string variable in C++?

A variable that can hold sequences of characters, defined using the 'string' data type.

How to concatenate two strings in C++?

Use the '+' operator, e.g., 'bookTitle = phrase1 + phrase2;'.