Question

In structured programming, every block has these two things?

1) Input and Output
2) Variables and Constants
3) Functions and Procedures
4) Loops and Conditions

Answer 1

In structured programming, blocks often contain variables and constants for maintaining state and using fixed values, while also utilizing functions, procedures, loops, and conditions to organize and control the flow of execution.

Step-by-step explanation:

In structured programming, a paradigm aimed at improving the clarity, quality, and development time of a computer program by making extensive use of the structured control flow constructs of selection (if/then/else) and repetition (while and for), every block typically includes some form of variables and constants. It is these elements that allow a block to retain state (variables) and use fixed values (constants) to perform computations or guide logic. Additionally, structured blocks often include or reference other key structural elements such as functions and procedures to perform tasks, and use loops and conditions to control the flow of execution.

Three commons programming languages that apply structured programming principles include Learning Python, Systems Programming with Modula-3, and THE SCHEME PROGRAMMING LANGUAGE. Each language has its own syntax for structuring programs, but the fundamental principle of organizing code into understandable, logical sections remains a best practice.