Analysis of the source program

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The document discusses the three phases of analysis in compiling a source program: 1) Linear analysis involves grouping characters into tokens with collective meanings like identifiers and operators. 2) Hierarchical analysis groups tokens into nested structures with collective meanings like expressions, represented by parse trees. 3) Semantic analysis checks that program components fit together meaningfully through type checking and ensuring operators have permitted operand types.

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Analysis of the Source Program: ,[object Object],[object Object],[object Object],[object Object]

Analysis of the Source Program: ,[object Object],[object Object]

Scanning or Lexical Analysis (Linear Analysis): ,[object Object],[object Object],[object Object],[object Object]

Scanning or Lexical Analysis (Linear Analysis): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Scanning or Lexical Analysis (Linear Analysis): ,[object Object]

Syntax Analysis or Hierarchical Analysis (Parsing): ,[object Object],[object Object]

Syntax Analysis or Hierarchical Analysis (Parsing): ,[object Object]

Syntax Analysis or Hierarchical Analysis (Parsing): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Semantic Analysis : ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

The purpose of types: To define what the program should do. e.g. read an array of integers and return a double To guarantee that the program is meaningful. that it does not add a string to an integer that variables are declared before they are used To document the programmer's intentions. better than comments, which are not checked by the compiler To optimize the use of hardware. reserve the minimal amount of memory, but not more use the most appropriate machine instructions.

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match the following attributes to the parts of a compiler strips out the comments and whitespace converts text into lexemes generates an Abstrat Symbol Tree recursive descent or table driven uses BNF or EBNF definitions a. lexer b. parser Solution The Program and Portfolio Management Maturity Model is an effective tool for organizations to decide quickly what PPM improvements they should make to enhance their organization\'s ability to optimize investments, execute big changes and deliver value. Overview Key Findings Real project, program and portfolio management, when operating at the level of well-integrated practices, is the key enabler that allows organizations to identify and execute strategic change. Any meaningful undertakings to enhance or evolve the program and portfolio management (PPM) function must pay more than lip service to organizational structure, business model and culture to have any chance of success. Competitive pressures and changing market conditions are forcing organizations toward Level 3, and most organizations still aren\'t ready to make the leap. Recommendations At any level of PPM maturity, focus first on helping the organization make well-informed investment choices. This will improve the odds of project success more than any other factor. For organizations that require enterprisewide change and capabilities, it is worth the effort to pursue Level 4, where enterprise PPM practices are built. Identify objectives for your enterprise, and use them to identify the most salient improvement opportunities for your enterprise. Meticulously manage the change involved in maturing/improving your PPM capabilities. Analysis Project/program/portfolio management office (PMO) leaders, program managers and portfolio managers are frequently challenged by ineffective processes, lack of stakeholder engagement and difficult-to-quantify value. 1 Part of the problem is failure to match their processes, people and technology approaches to the maturity level of their organizations. 2 The Gartner Program and Portfolio Management (PPM) Maturity Model assessment is designed to help PPM leaders understand best practices around large project management, as well as PPM to handle delivery of strategic value. This model assumes that organizations progress through a maturity curve and that each level of organizational maturity directly affects the level of investment and types of PPM approaches organizations choose to adopt. arsing A parser is an algorithm that determines whether a given input string is in a language and, as a side-effect, usually produces a parse tree for the input. There is a procedure for generating a parser from a given context-free grammar. Recursive-Descent Parsing Recursive-descent parsing is one of the simplest parsing techniques that is used in practice. Recursive-descent parsers are also called top-down parsers, since they construct the parse tree top down (rather than bottom up). The basic idea of recursive-descent par.

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