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{{COI-check|date=May 2009}}
A '''fifth generation programming language''' (abbreviated as '''5GL''') is a [[programming language]] based on solving problems using constraints given to the program, rather than using an [[algorithm]] written by a programmer. Most [[constraint programming|constraint-based]] and [[logic programming]] languages and some [[declarative
While [[fourth-generation programming language]]s are designed to build specific programs, fifth-generation languages are designed to make the computer solve a given problem without the programmer. This way, the programmer only needs to worry about what problems need to be solved and what conditions need to be met, without worrying about how to implement a routine or algorithm to solve them. Fifth-generation languages are used mainly in [[artificial intelligence]] research. [[Prolog]], [[OPS5]], and [[Mercury programming language|Mercury]] are examples of fifth-generation languages.{{Citation needed|date=September 2010}}
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