Programming

Translation
1. Assembler
  1. Assembly language into machine code
2. Complier
  1. Creates a executable file to run the program
  2. when complied it does'nt need the original source code
3. Interpreter
  1. Execute the source code directly
  2. Would be used on open source sfotware
Control flow
1. Sequence
  1. Order
2. Selection
  1. IF statements
3. Iteration
  1. Loops
High level/low level programming
1. High level has to be translated
  1. e.g. Python
  2. Uses language that is easier to understand by humans
  3. Has to be translated
2. Low level is understood by the processor
  1. Assembly language
    1. Codes specific to a type of processor
      1. e.g. INP, LDA, OUT
    2. Written as each instruction and register location
  2. Machine code
    1. Binary codes for each instruction and register location
Algorithm
1. Solving a problem 1 step at a time
2. Processors can only process 1 instrucution at a time
3. Mainly expressed as a flow chart
  1. Need to know the shapes
Pseudocode
1. Used for planning alrgorithm
2. Should allow a programmer to write in any language
3. Key words written in capital letters e.g. INPUT, IF, WHILE
Data type
1. Operations are mathematical symbols e.g. < > + -
2. Variable or constant
  1. Variable changes during the program e.g. score in a game
  2. Constant stays the same e.g. Pi
3. Arrays are lists of the same data types
4. Integers and real numbers
  1. integer is a whole number
Testing
1. Logical error
  1. User mistake
2. Run-time error
  1. User unefficiant coding so it may crash/ have a bug
3. Syntax error
  1. All program have different language or have a different rule (not a correct language being used)

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Programming

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	Criado por Nik Jagzz quase 10 anos atrás