The Accredited Symbian Developer Primer. Fundamentals of by Jo Stichbury

By Jo Stichbury

This new publication, first within the Academy sequence, is the reliable consultant to the ASD examination, priming applicants for the examination, explaining precisely what they should understand.

The Primer explains the information established within the accepted Symbian Developer examination, picking and explaining the subjects tested. all the exam's targets is succinctly defined, with the proper innovations defined intimately. either commonplace C++ and issues particular to Symbian C++, reminiscent of Symbian varieties and Declarations, Platform Secuirty, and Cleanup Stack, are covered.

The authors are specialists within the box of Symbian C++ and contributed commonly to the layout and construction of questions for the ASD examination. Jo Stichbury is the writer of Symbian OS defined and either authors are, after all, totally certified approved Symbian Developers.

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Neither the case nor default keywords may be used outside the scope of the switch statement The break keyword is also valid in loop and conditional statements. Iteration statements There are three iteration or loop statements in C++: while, for and do. All the statements repeat a block of instructions until some condition is met or a break is used. while (condition) statement; 12 C++ LANGUAGE FUNDAMENTALS for (for-init-statement; condition; expression) statement; do statement while (condition); The while statement is typically used in operations such as reading an input stream where there are no obvious numeric limits, making a logical test more practical.

For example, an integer type allows only whole number values and has plus and subtraction operations (among others) associated with it. All values in C++ require memory. The language itself does not specify how much memory – that is an implementation detail – but typically an int is represented by a single 32-bit word (4 bytes). This is about as basic as it gets: int n = 42; The identifier n is the name of a variable of type int and is initialized with the value of 42 (typically held in 4 bytes of storage).

Operators have associativity. • Unary operators may be prefix or postfix. The number of operands an operator or function takes is sometimes referred to as arity. All operators return a single value. b Binary value operator value value operator expr expr operator expr a+b a >> b a && b *This is pseudocode notation, not formal language definition syntax Associativity refers to the order of evaluation. • Left-to-right associativity: a+b+c means (a+b)+c (that is, a + b is evaluated first) • Right-to-left associativity: a+b+c means a+(b+c) (that is, b + c is evaluated first) A great proportion of operators in C++ have left-to-right associativity.

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