Understanding Variables and Constants in Programming

What is a variable in programming?

• A command in programming languages to perform calculations.

• A location in memory that can store data which can be modified.

• A label for a specific type of data.

• A fixed location in memory that cannot change.

Why can't variable names contain spaces?

• Spaces are reserved for system use.

• Programming languages do not allow spaces in variable names.

• It is a convention to make reading code easier.

• Spaces are used for commands in programming.

What does the '=' symbol represent in programming?

• Comparison between two values

• Equality between two variables

• A mathematical addition

• Assignment of a value to a variable

What happens when you change the value of a variable?

• The variable name changes.

• The program stops executing.

• The original value is deleted from memory.

• A new variable is created.

How do you print the value of a variable in the program?

• Variables cannot be printed directly.

• By calling the variable name alone.

• Using the 'show' command.

• Using the 'print' command followed by the variable name.

What is a constant in programming?

• A variable that can change.

• A type of function.

• A location in memory whose data cannot be altered.

• A temporary storage for data.

What will happen if you try to change the value of a constant?

• The constant turns into a variable.

• Nothing happens.

• The program will throw a syntax error.

• The constant will update to the new value.

Why are constants usually written in capital letters?

• To differentiate them from variables.

• To indicate they are important.

• It makes them run faster.

• It's a requirement in all programming languages.

Can a variable that hasn’t changed since its declaration be considered a constant?

• No, it changes into a constant over time.

• Yes, but only in certain programming languages.

• No, it must be explicitly declared as a constant.

• Yes, if it hasn’t changed, it’s a constant.

What is the primary difference between a variable and a constant?

• Constants can be changed under certain conditions.

• There is no difference; it's just terminology.

• Variables can store more data types than constants.

• Variables can have their data altered, constants cannot.