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A while loop is a control flow statement that repeats code until a condition is false. Learn how to write a while loop in different programming languages, such as C, Java, Python, and more, with examples and diagrams.
Control flow is the order in which statements, instructions or function calls of an imperative program are executed or evaluated. Learn about the primitives, categories and proposed control structures of control flow in computer science.
Learn how over 50 programming languages differ in syntax features such as expressions, statements, line continuation, and more. See tables, diagrams, and examples of syntax structures and conventions for each language.
Duff's device is a C programming technique to manually implement loop unrolling by interleaving do-while and switch statements. It was invented by Tom Duff in 1983 to speed up a real-time animation program and is valid C but controversial.
Learn about foreach loop, a control flow statement for traversing items in a collection, in various programming languages. Compare syntax, language support, and examples of foreach loops in different contexts.
A for loop is a programming construct that allows repeated execution of a block of code, called the loop body, until a condition is met. Learn how to use for loops in different languages, such as C, Fortran and Python, and how to handle loop variables, counters and break statements.
Python is a high-level, general-purpose programming language with a focus on code readability. It was created by Guido van Rossum in the late 1980s and has influenced many other languages, such as Ruby, Swift, and Julia.
Learn how assignment statements set and/or re-set the value of variables in computer programming languages. Compare different notations, semantics, and variants of assignment, such as single assignment, augmented assignment, and parallel assignment.