Data structure day 8 - two dimensional array and matrix multiplication, and transpose of compressed matrix
The first is matrix multiplication
#include<stdio.h>
#include<stdlib.h>
/**
*Dynamic two-dimensional array
*/
typedef struct TwoDArray{
int rows;
int columns;
int **elements;
} TwoDArray, *TwoDArrayPtr;
/**
*Static two-dimensional array
*/
typedef struct TwoDStaticArray{
int rows;
int columns;
int elements[4][5];
} ...
Posted by g00bster on Thu, 19 May 2022 00:09:30 +0300
22 array pointer and pointer array
catalogue
problem
1 array type
2. Define array type
3 array pointer
4 pointer array
problem
Are the following statements legal?
int array[5];
int matrix[3][3];
int* pa = array;
int* pm = matrix;
Array represents the address of the first element of the array. What does matrix represent?
The address values of array and & array are t ...
Posted by Toby on Tue, 17 May 2022 11:21:24 +0300
A simple way to realize ai in man-machine combat with gobang game in c language
A simple way to realize ai in man-machine combat with gobang game in c language
Idea:
First, select the color of the computer's chess pieces in the main function and call different functions. When it's the computer's turn, the basic idea is to traverse every empty space on the chessboard, calculate the value one by one, find the position with ...
Posted by jdc44 on Tue, 17 May 2022 10:34:32 +0300
String reverse order - multiple methods
Reverse the order of strings, taking the string abcdef as an example
1. With additional arrays
#include <stdio.h>
#include <string.h>
int main() {
char str[] = "abcdef";
//Find the size of the string, including '\ 0'
int sz = strlen(str) + 1;
//Dynamic memory allocation, apply for a character array of sz size
...
Posted by zechdc on Tue, 17 May 2022 03:07:02 +0300
Simple point - c-Lesson5 (structure, branch statement (if, switch), difference between p and * p)
1. Structure
(1) A structure definition is a collection that describes different data types or the same data type. (complex type) (2) Access structure: pointer access structure (- >); Variable name access structure (.) (3) The difference between p and * p depends on whether it is a left value or a right value.
#if 1
#include < ...
Posted by heminfotech on Mon, 16 May 2022 23:33:28 +0300
UNIX Advanced Environment Programming Learning Notes 6_ Process Control
1. Function fork
Function prototype:
#include<unistd.h>
pid_t fork(void);
The fork function creates a subprocess and returns it twice. Child process ID and 0, respectively. It is equivalent to copying the same process and executing it at the point where fork is called while the program is running. It has two main purposes: 1. Parent a ...
Posted by hoopplaya4 on Sun, 15 May 2022 22:01:01 +0300
The most complete and detailed explanation of three chess
If you want to write the sanbang code, you must have a start-to-finish idea:
First of all we have three files
game.h - declaration of the function
game.c - function implementation
test.c - test game
Create a menu (menu())
//menu selection interface
void menu()
{
printf("*****************\n");
printf("**** 1.play ****\n");
pr ...
Posted by commandonz on Sun, 15 May 2022 01:31:55 +0300
[IT goose C/C + + Series Courses] pretty boy, I want to learn programming. Why tell me about the operating system?
Day01: Let's regain our love for our dream lover C and C + + [IT C/C + + Series Courses] Operating System Fundamentals Course
A "shuangwen" programming tutorial of "against the sky"
BILIBILI IT goose BILIBILI@IT goose
Course introduction:
[C/C + + Series Courses] Operating System Fundamentals Course This cours ...
Posted by PHPcoder25 on Sun, 15 May 2022 00:51:08 +0300
FFmpeg old video coding and new video flow
Call process of old video coding
(1)API registration Only the interface of libavcodec part is used, so avcodec can be used when registering to use FFmpeg interface_ register_ All to register
avcodec_register_all();
(2) Find encoder After the registration operation is completed, you first need to find the encoder you use. You can use the i ...
Posted by dannydefreak on Sat, 14 May 2022 13:06:19 +0300
STM32CubeMX series | I2C bus
I2C bus
1 Introduction
1.1 Introduction to I2C bus
The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS, which is used to connect microcontrollers and their peripheral devices. It is a serial bus composed of data line SDA and clock line SCL, which can send and receive data. Two-way transmission is performed be ...
Posted by lanbor on Sat, 14 May 2022 12:49:37 +0300