Structured programming is a programming paradigm that promotes logical correctness, program modularity, and code readability. It is based on the concept of control flow, which dictates the order in which the individual statements, or instructions, in a program are executed. In structured programming, this control flow is typically implemented through the use of subroutines, or blocks of code that can be invoked from other parts of the program.   This modularization makes it easier to understand and modify large programs, as well as to reuse code. As a result, structured programming is considered to be a more efficient and effective way of coding compared to other paradigms, such as unstructured programming.