Which representation is used to illustrate the logic flow of a program?

The flowchart is the representation that effectively illustrates the logic flow of a program. Flowcharts use standardized symbols such as ovals, rectangles, diamonds, and arrows to depict the different stages of a process, decision points, and the sequence in which tasks are performed. They visually represent how data moves through a system and the operations performed at each step, making it easier to understand complex logic and workflows.

In a flowchart, the beginning and end of a process are marked clearly, and branches in the logic can be represented with decision nodes, allowing for an intuitive understanding of the program's flow. This visual approach aids in both the design and debugging phases of software development, as it provides a clear roadmap of how different parts of the program interact.

Other representations, such as data structure diagrams, class diagrams, and sequence diagrams, serve specific purposes within software design. For instance, data structure diagrams focus on the relationships and organization of data within a system, class diagrams model the structure of classes and their relationships in object-oriented programming, and sequence diagrams illustrate how objects interact in a particular scenario over time. While these diagrams contribute to overall program understanding, they do not primarily represent the flow of logic like a flowchart does.