Function Pointers

Sharing an Embedded Programming Template

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Sharing an Embedded Programming Template

Input Events to State Machine #include "stdio.h" #define EXECUTE_VOID(func) {if((func)!=NULL) (func());} typedef void (*select_machine_t)(void); typedef enum _event_index{ event_index_1 = 0, event_index_2, event_index_3, event_index_end} event_index_e; typedef enum _status_index{ status_index_1 = 0, status_index_2, status_index_end} status_index_e; void machine_1(void);void machine_2(void);void machine_3(void);void machine_4(void); select_machine_t select_machine[event_index_end][status_index_end] = { {machine_1, machine_2}, {NULL, machine_3}, {machine_4, NULL}}; void machine_1(void){ printf("machine_1\r\n");} void machine_2(void){ printf("machine_2\r\n");} void … Read more

How to Write Maintainable Embedded Programming Code?

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How to Write Maintainable Embedded Programming Code?

1 Object-Oriented C Object-oriented languages are closer to human thinking patterns, significantly reducing code complexity while enhancing code readability and maintainability. Traditional C code can also be designed to be readable, maintainable, and of lower complexity. This article will illustrate this through a practical example. 2 Basic Knowledge 2.1 Structures In addition to providing basic … Read more

How to Use Complex Pointers in Embedded Programming

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How to Use Complex Pointers in Embedded Programming

1. Introduction In C programming, pointers are one of the most error-prone areas, especially when multiple pointers are involved, which can be quite confusing. This article analyzes the commonly used complex pointers in embedded systems to clarify the common pitfalls in using pointers in C language. 2. Function Pointers and Pointer Functions In C language, … Read more

Learning | 17 Essential C Programming Tips

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Source: Internet 1. A pipeline can achieve maximum efficiency only when it is filled with instructions, executing one instruction per clock cycle (referring only to single-cycle instructions). If a jump occurs in the program, the pipeline will be cleared, requiring several clock cycles to refill. Therefore, minimizing the use of jump instructions can enhance program … Read more

Function Pointers and Pointer Functions in C++

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Click the above“Mechanical and Electronic Engineering Technology” to follow us 1. Function Pointers In C++, a function pointer is a pointer that points to a function. They can be used in various scenarios such as callback functions, event handling systems, sorting algorithms, etc. Understanding the type of the function and how to declare and use … Read more

C++ Tutorial – Detailed Explanation of Function Pointers

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C++ Tutorial - Detailed Explanation of Function Pointers

As we know, pointers are used to point to variables; similarly, function pointers are used to point to functions. They are primarily used to store the address of a function. We can use function pointers to call functions or pass function pointers as parameters to another function. Function pointers are mainly useful in scenarios such … Read more

Advanced C Language: Function Pointers Explained

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Advanced C Language: Function Pointers Explained

Click the blue words Follow us Function Pointers Functions also have their own addresses; the function name/&function name is the address of the function. 1.1 Basic Form In the study of array pointers, we learned that int arr[5];int (*pa)[5] = &arr;//pa is an array pointer The type of pointer variable pa is int(*)[5]. So what … Read more

A Comprehensive Guide to C Language Pointers with Code Examples

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A Comprehensive Guide to C Language Pointers with Code Examples

Word Count: 14000 Content Quality Index: ⭐⭐⭐⭐⭐ Pointers are crucial in C. However, to fully understand pointers, one must not only be proficient in C but also have a basic knowledge of computer hardware and operating systems. Therefore, this article aims to explain pointers comprehensively. Why Do We Need Pointers? Pointers solve some fundamental problems … Read more

Detailed Explanation of Function Pointers in C Language

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Detailed Explanation of Function Pointers in C Language

We know that we can create pointers to any data type, such as int, char, and float. We can also create pointers to functions. The code of a function always resides in memory, which means that the function has a certain address. We can obtain the memory address using function pointers. Let’s look at a … Read more

Detailed Explanation of Strings in C Language

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Detailed Explanation of Strings in C Language

Strings can be defined as one-dimensional character arrays terminated by a null character (‘\0’). Character arrays or strings are used to manipulate text, such as words or sentences. Each character in the array occupies one byte of memory, and the last character must always be 0. The terminating character (‘\0’) is important in strings because … Read more