Programming design, akin to a blueprint, guides developers in carrying out their programs effectively.

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What is program

Program, like other inventions, is designed to solve problems, but within the digital world. It operates like a black box, producing consistent output based on the input. Users do not need to understand the inner workings of the box; they simply input data and receive the desired output.

In mathematics, program likes a function, from a set X to a set Y assigns to each element of X exactly one element of Y.

y = f(x) = 2x + 1  
=> f(1) = 3  
=> f(2) = 5  
=> f(3) = 7
math

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How to learn programming design

1. Understand the basics
2. Learn data structure and algorithm
3. Practice problem solving
4. Study design methodology