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“while” loop
“while” loop

... declaration process uses up time and memory unnecessarily. • Loops are often nested - to usually not more than three levels. For example: int i, j; int sum = 0; for (i = 1; i <= 100; i++) for (j = 1; j <= 10; j++) sum++; ...
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... Caused when a program tries to store the wrong type of data in an array Caused by an attempt to access a nonexistent file Caused by general I/O failures, such as inability to read from a file Caused by referencing a null object Caused when a conversion between strings and number fails Caused when th ...
Executable Formal Specifications with Clojure
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Object-oriented programming

Object-oriented programming (OOP) is a programming paradigm based on the concept of ""objects"", which are data structures that contain data, in the form of fields, often known as attributes; and code, in the form of procedures, often known as methods. A distinguishing feature of objects is that an object's procedures can access and often modify the data fields of the object with which they are associated (objects have a notion of ""this"" or ""self""). In OO programming, computer programs are designed by making them out of objects that interact with one another. There is significant diversity in object-oriented programming, but most popular languages are class-based, meaning that objects are instances of classes, which typically also determines their type.Many of the most widely used programming languages are multi-paradigm programming languages that support object-oriented programming to a greater or lesser degree, typically in combination with imperative, procedural programming. Significant object-oriented languages include Python, C++, Objective-C, Smalltalk, Delphi, Java, Swift, C#, Perl, Ruby and PHP.
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