Basics of Programming

What is a variable in programming?

• A variable is a symbolic name for a storage location in memory that can hold a value and may change during program execution.

• A variable is a type of function that performs calculations.

• A variable is a command that executes a specific task in a program.

• A variable is a fixed value that cannot be changed during program execution.

Which of the following is a data type: Integer, String, or Both?

• Character

• Float

• Boolean

• Both

How do you declare a variable in Python?

• variable_name : value

• set variable_name to value

• You declare a variable in Python by using the syntax: variable_name = value.

• let variable_name = value

What function is commonly used to get user input in Python?

• get_user_input()

• fetch_input()

• read_input()

• input()

What is the output of the following code: print(type(5))?

What is the purpose of the 'print' function in programming?

• To store data in a variable.

• To create a new function.

• To execute a loop in the program.

• To display output to the console or standard output.

How can you convert a string to an integer in Python?

• Use eval('string') to convert a string to an integer.

• Apply float('string') to get an integer from a string.

• Use str('string') to convert a string to an integer.

• Use int('string') to convert a string to an integer.

What is the difference between a float and an integer?

• A float can represent decimal values, while an integer represents whole numbers.

• Integers can represent fractions, while floats cannot.

• A float is always a whole number, while an integer can be decimal.

• A float is a type of integer that includes letters.

What will be the output of print('Hello' + ' World')?

• Hello + World

• Hello World!

• Hello World

• HelloWorld

How do you read input from the user in Java?

• Use InputStreamReader class from java.net package.

• Use Console class from java.lang package.

• Use Scanner class from java.util package.

• Use BufferedReader class from java.io package.