String processing refers to the manipulation and analysis of sequences of characters, known as strings. This includes operations such as searching, sorting, and modifying strings to extract useful information or format data. Common programming languages like Python, Java, and C++ provide built-in functions and libraries to facilitate string processing tasks. In various applications, string processing is essential for tasks like data validation, text parsing, and natural language processing. For example, regular expressions are powerful tools used to identify patterns within strings, making it easier to perform complex searches and replacements. Overall, string processing is a fundamental aspect of computer programming and data handling.