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When using select or group, you will sometimes want to generate a temporary result that will be used by a subsequent part of the query to produce the final result. This is called a query continuation (or just a continuation for short), and it is accomplished through the use of into with a select or group clause. It has the following general form: into name query-body where name is the name of the range variable that iterates over the temporary result and is used by the continuing query, specified by query-body. This is why into is called a query continuation when used with select or group it continues the query. In essence, a query continuation embodies the concept of building a new query that queries the results of the preceding query.

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Table 1-2 lists the 32 keywords that, combined with the formal C syntax, form the C programming language as defined by the C89 standard. These are the keywords that form the C subset of C++ and the ones that are supported by C++ Builder. Also shown are 12 extended keywords added by Borland that may also be included in a C program. Of course, using the extended keywords renders your program nonportable. (Additional Borland extended keywords are defined for use with C++. See Part Three.) All C keywords are lowercase. In C uppercase and lowercase are different: else is a keyword; ELSE is not. A keyword may not be used for any other purpose in a C program that is, it cannot serve as a variable or function name.

The history behind C# How C# relates to and uses the .NET Framework The three principles of object-oriented programming Create, compile, and run C# programs Variables The if and for statements Code blocks The C# keywords

5. We do (a) and (b). (a) Let A = x 3 x2 + 1 . Then x3 x ln A = 3 ln x + ln(x 2 + 1) ln(x 3 x) hence 3x 2 1 d 3 2x dA/dx 3 . = ln A = + 2 A dx x x +1 x x Multiplying through by A gives dA x2 + 1 = x3 3 dx x x (b) Let A = 3x 2 1 3 2x 3 . + 2 x x +1 x x

Light is tricky. You can t always trust your eyes. And you can t always trust your light meter either. With the best of cameras, light meters, and flash units, you will still have shots that mysteriously turn out too dark or too light. The tips here won t solve all problems, but they ll help.

Part II:

TABLE 21-5

Initial value of StaticDemo.Val is 100 StaticDemo.Val is 8 StaticDemo.ValDiv2(): 4

Marshall Field Garden Apartment Homes (MFGAH), an inner-city housing project consisting of a 10 building, 628 unit gated community in Chicago, Illinois, uses hand geometry readers to improve residential security. (For more information, go to http://www.axiomsecurity.com/perspectives/presentations.html.) The key objective was to provide decent, safe, and sanitary affordable housing at MFGAH. Specifically, MFGAH management sought to address the following concerns:

The string class provides several member functions that search a string, including find( ) and rfind( ). Here are the prototypes for the most common versions of these functions: size_type find(const string &strob, size_type start=0) const; size_type rfind(const string &strob, size_type start=npos) const; Beginning at start, find( ) searches the invoking string for the first occurrence of the string contained in strob. If found, find( ) returns the index at which the match occurs within the invoking string. If no match is found, then npos is returned. rfind( ) is the opposite of find( ). Beginning at start, it searches the invoking string in the reverse direction for the first occurrence of the string contained in strob (i.e., it finds the last occurrence of strob within the invoking string). If found, rfind( ) returns the index at which the match occurs within the invoking string. If no match is found, npos is returned. Here is a short example that uses find( ):

Sequential analysis refers to studies that include time, both in duration and in sequence. These studies are very visual, although they also include a large amount of quantitative information, e.g., the amount of time required for specific tasks. The visual nature of the model provides a location-based element to the study; this will permit evaluation of issues such as work area definitions and crew interferences (and the rate of movement of a work area through the project).