Commonly used programs

Commonly used programs

1. Libaries

   • Commonly used private functions and sub programs
     • Maths operations e.g. square root
     • subprograms e.g. input and output routines

2. Software development environment

   • Editor
     • Allows a programmer to enter, format and edit source code.
   • Compiler
     • Converts source code into executable machine code
   • Interpreter
     • Converts each line of source code into machine code, and executes it as each line of code is run.
   • Linker
     • A program which allows previously compiled code, from software libraries, to be linked together
   • Loader
     • A program which loads previously compiled code into memory
   • Debugger
     • A program which helps locate, identify and rectify errors in a program
   • Trace
     • displays the order in which the lines of a program are executed, and possibly the values of variables as the program is being run