Programming Basics

Programming Basics

1. Data Types

   • 5 main data types
     • using the correct data type allows for a more memory efficient, robust and predictable code
   • Casting
     • changes data type
     • done using:
       • int() - String to integer.
       • str() - Boolean to string.
       • ASC() - Character to ASCII number.
       • CHR() - ASCII number to character.
       • float() - Integer to float.

2. Operators

   • special characters that perform certain functions
   • Arithmetic operators
     • take 2 values and perform a math function on them
       • e.g. addition, subtraction, division and multiplication
       • DIV operator returns whole number part of a division
         • MOD operator gives remainder
       • exponentiation is used to raise a number to a power
   • Assignment and comparison operators
     • Assignment operators
       • uses =
       • assigns values to constants or variables
     • Comparison operators
       • compare expressions on their left to the expression on their right

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