What is a common use of nested loops in programming?

A common use of nested loops in programming is to display data in a table format using rows and columns. Nested loops allow for an efficient way to iterate through multi-dimensional data structures, such as arrays or lists that represent rows and columns.

In the context of displaying data, the outer loop typically iterates over each row, while the inner loop iterates over each column within that row. This structure allows programmers to access and manipulate each element in a structured way, making it ideal for tasks like generating tables, grids, or any layout where data has a two-dimensional organization.

Other uses for nested loops can also be valid but may not be as directly associated with visual representation. For example, while functions can be designed to include nested loops, it's not a primary characteristic. Similarly, event handling involves responding to user actions and does not inherently require a nested loop structure. Manipulating string data can be accomplished with various techniques, but it does not typically necessitate nested loops, as most string operations can be handled with single loops or string methods.