For beginners who are just starting out with C, it is recommended to start with simple but challenging projects to consolidate skills and demonstrate abilities. 1. Simple calculator: implements basic functions such as addition, subtraction, multiplication and division, and can advanced support for bracket analysis, floating point number calculation and error processing, and try to separate logic and interaction to improve the code structure; 2. File management or text processing tools: such as counting the number of characters and words in text, implementing the search and replacement function, and be familiar with file flow and STL containers; 3. Simple database or student management system: Practice object-oriented programming, use class encapsulation information, realize the addition, deletion, modification and query of data, and try to simulate table connections; 4. Mini game development: such as guessing numbers, tic toe, Tetris, etc., exercise logical thinking and state management capabilities, and frequently use loops, judgments and data structures. These projects can be gradually deepened according to interests and progress, focusing on quality rather than quantity, which truly reflects the understanding and hands-on ability of C.

If you are just starting to learn C and want to consolidate your skills and demonstrate your abilities through projects, it is best to start with a simple but challenging small project. These projects do not need to be too complex, but they must reflect your understanding of language and problem-solving skills. Below are some C project suggestions for beginners, which can be practiced and conveniently placed into the portfolio.

1. Simple Calculator

This is one of the most classic introductory projects, but don't underestimate it. A well-made calculator can show you how to master the basic concepts such as functions, classes, exception handling, etc.

• Basic addition, subtraction, multiplication and division functions can be realized first
• Advanced: Added bracket analysis, support for floating point numbers, and error input processing
• If you want to make the interface more friendly, you can use the command line menu or try a simple graphical interface library (such as SFML)

Tips: Try to write the operation logic and user interaction parts separately, so that the code structure will be clearer and easier to expand.

2. File manager or text processing tool

C is very suitable for system-level operations, such as reading and writing files, statistics content, replacing keywords, etc. You can do one:

• Text file content statistician (statistic number of characters, word number, line number)
• File content search and replacement tools
• Simple log analyzer (such as extracting content from specific keywords)

Projects in this direction can familiarize you with file streams (fstream), string processing, and some practical STL containers (such as maps and vectors).

3. Simple database or student management system

This type of project can help you practice object-oriented programming (OOP), such as using features such as classes, objects, and inheritance.

• Functions include adding records, querying, modifying, and deleting data
• Data can be saved in memory or written to files
• Use classes to encapsulate information about "student" or "products"

Want to improve further? You can try to simulate table joins using structures or class combinations, such as establishing associations between a course class and a student class.

4. Mini games: guess numbers, tic toe, Tetris, etc.

Game development is a very interesting direction and can also exercise your logical thinking and state management skills.

• Number guessing game: randomly generate a number, let the user guess, and give a prompt
• Console version of tic toe chess: Two people take turns to play chess to determine the outcome
• A more advanced one can try the console version of Snake or Tetris

This type of project will allow you to frequently use loops, conditional judgments, arrays/vectors, etc., and is a good opportunity for comprehensive training.

In fact, you don’t have to pursue coolness from the beginning when choosing a project. The key is that it can reflect your understanding of C and hands-on ability. The above projects can be gradually deepened according to your own interests and learning progress.

Basically, it’s all. Pick one or two and finish it carefully, which is more valuable than just making tens of them with a simple taste.

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