C++ Programming II: Strings and Data Types

What is the data type of the variable X5?

What is the size of memory allocated for the string '“JADARA”'?

What is the purpose of the #include directive in the context of strings?

What is the difference between string s1 and char s1[]?

What is the value of the variable X4?

What is the data type of the variable X2?

What is the purpose of declaring a string variable?

What is the difference between a string and a character?

What is the size of memory allocated for the variable X3?

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

Data Types and Declarations

A string is a set of characters, represented as a sequence of letters in quotes.
Examples of strings: "JADARA", "C++ is fun!", " " (empty string).
A string variable stores a sequence of characters, and its size is variable.
In contrast, a char variable stores a single character, and its size is 1 byte.

Declaration and Initialization of Strings

The string type is not a built-in type in C++, so it requires the #include directive to use all its functions.
A string can be initialized using the string keyword, e.g., string X6 = "JADARA";.
A string can also be initialized as an array of characters, e.g., char s1[]= "AAAAA AA";.

Key Differences between string and char arrays

A string variable is declared using the string keyword, while a char array is declared using the char keyword.
A string variable can be initialized with a string literal, while a char array must be initialized with a character array.
A string variable can be manipulated using string functions, while a char array must be manipulated using array operations.

Output

The COUT statement is used to output strings and other variables to the console.

This quiz covers C++ strings and data types, including declarations and examples. Designed for computer science students in the Programming II course.