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For loop is a programming language conditional iterative statement which is used to check for certain conditions and then repeatedly execute a block of code as long as those conditions are met.
The for loop is distinguished from other looping statements through an explicit loop counter or loop variable which allows the body of the loop to know the exact sequencing of each iteration.
The For loop is used in many imperative programming languages notably C and C++ and comes from the English word 'for' which is used to state the purpose of an object or action, in this case the purpose and details of the iteration.
For loops are generally used when the number of iterations is known or already established. For loops in different languages differ mainly by syntax and how the statements work as well as the level of expressiveness supported. But they generally fall into one of the following categories: