Data types

• What is the main topic of Section Six?

  Programming Basics - Data Types
• How does programming differ across languages?

  Principles remain the same, but syntax differs
• What will be provided in blue boxes in this section?

  Examples of code
• What is the output of the code shown in this section?

  It will be displayed in a specific box
• How many main data types are there in programming languages?

  Five main data types
• What are the five main data types in programming languages?

  1. Integer
  2. Real (or float)
  3. Boolean
  4. Character
  5. String
• What are integers in programming?

  Whole numbers, including negative and positive
• What is a real number in programming?

  Numbers that can have decimal points
• What does a Boolean data type represent?

  True or false values
• How many values can a Boolean take?

  Two values: true or false
• What is a character in programming?

  A single letter, number, or symbol
• How is a string defined in programming?

  A collection of characters
• What is the memory allocation for an integer data type?

  Typically 4 bytes
• How much memory does a real number typically take?

  Usually 8 bytes
• What is the memory requirement for a Boolean data type?

  1 bit
• How much memory does a character typically require?

  1 byte
• How much memory does a string take in programming?

  1 byte per character
• What is the purpose of casting in programming?

  To change the data type of a variable
• What is the typical memory allocation for a string?

  1 byte per character in the string
• What happens when weakly typed languages convert data types?

  They may lead to errors
• What is the result of strongly typed languages when converting data types?

  They produce predictable results
• How do weakly typed languages handle data types?

  They attempt to convert data types automatically
• How do strongly typed languages manage data types?

  They enforce strict data type rules
• What is the typical memory allocation for a real number?

  Usually 8 bytes
• What is the memory requirement for a Boolean?

  1 bit
• How much memory does a character take?

  1 byte
• How much memory does a string take?

  1 byte per character
• What is the typical memory allocation for an integer?

  Typically 4 bytes
• What is the memory requirement for a Boolean data type?

  1 bit
• How much memory does a character typically require?

  1 byte
• How much memory does a string take in programming?

  1 byte per character
• What is the purpose of casting in programming?

  To change the data type of a variable
• What is the data type for integer values?

  Integer
• How many bits are used for a 2-byte integer?

  16 bits
• How many bits are used for a 4-byte integer?

  32 bits
• What is the data type for real numbers?

  Real
• How many bits are used for an 8-byte real number?

  64 bits
• How many bits are needed for a Boolean value?

  1 bit
• How many bits are used for a character?

  1 byte
• How many bits are used for each character in a string?

  1 byte per character