Program construction

Question	Answer
Lexical analysis	Comments and unneeded spaces are removed keyword ,constants and identifiers are replaced by "tokens".
Symbol table construction	*A symbol table is created which holds the addresses of variables ,labels and subroutines
Syntax analysis	Tokens are checked to see if they match the spelling and grammar expected, using standard language definitions. This is done by parsing each token to determine if it uses the correct syntax for the programming language If syntax errors are found, error messages are produced.
Semantic analysis	Variables are checked to ensure that they have been properly declared and used. Variables are checked to ensure that they are of the correct data type, e.g. real values are not being assigned to integers. *Operations are checked to ensure that they are legal for the type of variable being used, e.g. you would not try to store the result of a division operation as an integer.
Code generation	Machine code is generated
Code optimisation	Code optimisation may be employed to make it more efficient/faster/less resource intensive
Programming errors such as	Syntax Runtime/execution Logical Linking Rounding Truncation

Resource summary

	Created by Ethan Long almost 4 years ago