Variables

What is a variable in computer science?

A variable is a storage location identified by a name that can hold a value, which can be changed during program execution.

What are the types of variables?

Variables can be categorized into local, global, and instance variables.

What is a local variable?

A local variable is defined within a function or block and can only be accessed within that specific function or block.

What is a global variable?

A global variable is defined outside of functions and can be accessed from any part of the program.

What is a constant variable?

A constant variable is a variable whose value cannot be changed once it is initialized.

What is variable scope?

Variable scope refers to the regions within a program where a variable is accessible.

What is a data type in the context of variables?

A data type defines the type of data a variable can hold, such as integer, float, string, or boolean.

What is the significance of variable naming conventions?

Variable naming conventions help improve code readability and maintainability by providing meaningful names.

What is type casting in relation to variables?

Type casting is the process of converting a variable from one data type to another.

What is a reference variable?

A reference variable points to the address of another variable rather than directly holding a value.