Chapter IV summary

The control statements used to implement branch structure in c language mainly include if statement and switch statement. Relational operator operatormeaning>greater than>=Greater than or equal to<less than<=Less than or equal to==be equal to!=Not equal to Relational expression: The formula linking two expressions with relational ...

Added by blueovaltv on Mon, 22 Nov 2021 19:16:06 +0200

C Primer plus Chapter 2 exercises

1. Write a program, call printf() function once, and print your first name and last name on one line. Call the printf () function again and print your first name and last name on two lines. Then, call the printf () function twice to print your first name and last name on one line. The output should be as follows (of course, replace the content ...

Added by lill77 on Mon, 22 Nov 2021 17:54:08 +0200

Industrial camera ranging development: practical part

preface This article will no longer involve the principle part. If you want to understand the basic knowledge, please see the previous article. We use the function in opencv, which is also the focus on this function. We get the external parameters through this function and get our final results through the external parameters! Opencv:SolvePNP ...

Added by Zangakat on Mon, 22 Nov 2021 04:14:45 +0200

C language learning notes - P16 (structure + illustration + problem example)

  Explanation of problem examples: T1. #include <stdio.h> int main() { int a, b, c; a = 5;//a=5 c = ++a;//c=6 a=6 b = ++c, c++, ++a, a++; //b=7 c=8 a=8 b += a++ + c; //b=23 a=9 c=8 printf(" a = %d\n b = %d\n c = %d\n:", a, b, c);//9 23 8 return 0; }  T2. Count the number of 1 in binary int count_number_of_1( int ...

Added by Pandolfo on Mon, 22 Nov 2021 03:14:53 +0200

51 Single-chip computer matrix key details, two-digit tube display (HC6800ESV2.0 in Puzhong)

1. Brief description         I am a student in school. This semester happens to be learning single-chip computer. I am also interested in it. There were no big problems in writing the programs of digital tube and clock, but I encountered some problems when I made the matrix keys, but I have solved them. I will write out the ...

Added by feeta on Sun, 21 Nov 2021 03:26:10 +0200

C language project practice: 2048 zero foundation project 208 lines of source code example

This article mainly introduces the implementation of C language in detail -- the example code in project 2048 is introduced in great detail, which has certain reference value. Interested partners can refer to it! Introduction to the game: 2048 is a puzzle game. The rules of the game are very simple. It is a simple and easy-to-use digital ga ...

Added by 0riole on Sun, 21 Nov 2021 00:31:38 +0200

[gcc Compilation Optimizations Series] When GCC compiles links, what is the--specs=kernel.specs link property?

1 Source of problem There's been a little less interest in rt-thread s recently, and today I suddenly see such a forum problem: Why would you be interested in this? There are two main reasons: Recently, we are researching some knowledge about gcc compilation links and making some notes to facilitate our own deeper understanding and me ...

Added by Credo on Sat, 20 Nov 2021 07:57:21 +0200

Data structure - depth first search of graph

Depth first search Unlike breadth first search, depth first search (DFS) is similar to the prior traversal of a tree. As the name implies, the search strategy followed by this search algorithm is to search a graph as "deep" as possible.Its basic idea is as follows: first access a starting vertex v in the graph, and then start from V ...

Added by watts on Sat, 20 Nov 2021 00:09:38 +0200

Serial transmission and Ubuntu use C to call opencv library to add Chinese characters and numbers to photos

1, Serial communication between PC s to transfer files 1. Experimental equipment Two laptops, two USB to TTL modules, two DuPont lines, stopwatch. 2. Operation and effect The RX and TX of the two USB are cross connected and plugged into the USB ports of the two computers respectively Open serial port assistant The settings are as follows: o ...

Added by ody on Fri, 19 Nov 2021 22:28:26 +0200

C language exception handling

preface Errors and exceptions: Errors and exceptions are errors that occur during program compilation or running. The difference is that exceptions can be caught and handled by developers; Errors generally do not need to be handled by developers (and cannot be handled), such as memory overflow. If exceptions are not handled in time, errors may ...

Added by rlafountain on Fri, 19 Nov 2021 22:22:28 +0200