Programmer Think

        Once, Xiaoyi said to me, "have you learned programming?" I nodded slightly. He said, "after learning programming, I'll test you. Should you initialize the array before using the array?"          I thought to myself, is such a simple question worthy of me? ...

1. What is the pointer 2. Pointer and pointer type 3. Field pointer 4. Pointer operation 5. Pointers and arrays 6. Secondary pointer 7. Pointer array 1, What is the pointer What is the pointer? Two key points of pointer understanding:          1. Pointer is the number of the smallest unit in ...

⌛ The origin of Joseph's problem: [finally, we will test it to see if it is correct]   it is said that Joseph, a famous Jewish historian, once had the following story: after the Romans occupied jotapat, 39 Jews hid in a cave with Joseph and his friends. 39 Jews decided that they would rather die than be caught by the enemy, so they dec ...

Printing function call stack information using backtrace under Linux Java, Python and other languages have relatively simple methods to print function call stacks. Is there any way to use C language under Linux? It is said that there are many ways. This article introduces the most basic method, that is, using glibc's backtrace() and backtrace_ ...

Catalogue of Series Articles 1. Use CubeMX to build STM32F103C8T6HAL Library Configure RCC Configure SYS Set PC13 to GPIO_Output is used to light up LED lights Set Serial Port USART1 Setup Project Click Generate Code and open the project in Keil. Add statements to the while loop in the main function while (1) { /* USER CODE ...

order Some people will never be together in this life, but there is a feeling that can be hidden in their heart and kept for a lifetime. Hi, this is fox~~ I haven't seen you for a few days. I went out the day before yesterday. I rested for a day and began to work hard today. Time really flies. 2021 will pass in the twinkling of an eye. I d ...

catalogue 1, What is an array? Arrays are divided into one-dimensional arrays and two-dimensional arrays. Let's see the most basic definition and initialization problems Now let's talk about some other details 2, I don't have much to say. Let's talk about it.     1, Basic two-dimensional array problem 2, Deep usage of arrays ...

   🌕 Write before 🍊 Blog Home Page: The Background of kikoking's Rivers and Lakes🎉 Welcome to your attention 🔎 Give the thumbs-up 👍 Collection ⭐ Message 📝🌟 This article was originally created by kikokingzz and started by CSDN!📆 Start time: 🌹 02 December 2021 🌹🆕 Latest update time: 🎄 02 December 2021 🎄✉️ Persistence a ...

1. Read string file Read string function fgets() Function prototype: char *fgets(char *str,int n,FILE *fp); //Its meaning is to read 10 characters from the file referred to in fp, send them into the character array STR, and then print out the str string. If the file cannot read data, it will return NULL and leave the loop at this time. F ...

SSL encountered at work_ Read related issues, for SSL_ There are some questions about the read mechanism of read: SSL_ What is the difference between read and read and recv?. SSL_ Does read cause the inconsistency between the data to be read and the data actually returned?. SSL_ What is the behavior of read under blocking and non blocking ...