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1, Operator 1. Unary operator (only one operand) ! Logical reverse operation #include <stdio.h> int main() { //In C language, 0 means false and non-0 means true int flag = 0; if (!flag) { printf("hehe\n"); } return 0; } -Negative + positive #include <stdio.h> int main() { int a = 10; int b = -a; printf("%d\n", b); ...

Off 1: addition operation Task descriptionRelevant knowledge (omitted)Programming requirementsTest description Task description This off task: write an addition program, input integers a and B, and output their sum. Relevant knowledge (omitted) Programming requirements Please supplement the code between begin end, write an addition progra ...

3.1 arithmetic operators   operatoroperationexampleresult+Plus sign+77-minus signa=7;-a-7+plus9+716-reduce9-72*ride9*763/except7/71%Surplus9%71 ++ ++ Auto increment (before): value after operation Auto increment (later): take value first and then operate a=7;b=++a a=7;b=a++ a=8;b=8 a=8;b=7 -- -- Self subtraction (before): calculate first ...

From: Micro reading https://www.weidianyuedu.com/content/2117161192623.html There are many popular programming languages on the market, such as Python , JAVA, Go, etc. you may think C language is very old and backward. If you have this idea, you may just be a beginner. Before I shared with you the definition and usage of several special stan ...

🌟 preface Hello, I'm Edison 😎 The last article said that we should sort out the whole series of C language; So I'm not idle for three days on New Year's day. No, today we start our second "branch statements and circular statements"; Let's get it! The link to the previous article is here: Roommates only need a king's time to ...

Title: there are 1, 2, 3 and 4 numbers. How many different three digits can be formed without repeated numbers? How much is it? A very simple high school topic is also well realized by program. Don't say much, just go to the code. #include<stdio.h> int main() { int i,j,k; printf("\n"); for(i=1;i<5;i++) { // The followin ...

C language to realize quick sorting and its system optimization and analysis catalogue I Implementation of quick sort 1. Implementation ideas 2.QSort implementation 3. Implementation of the function Partition() 4. Complete code   II System optimization of quick sort 1. Optimize the selection of keyword pivotkey 2. Optimize unnecessary ...

1. Variables 1.1 integer type 1.1.1 introduction The integer type in C language is used to store integers. For example, int a =10 1.1.2 classification of integer types Type namesizeValue rangechar1byte-2 ^ 7 to 2 ^ 7-1short2byte-2 ^ 15 to 2 ^ 15-1int4byte-2 ^ 31 to 2 ^ 31-1long4byte-2 ^ 31 to 2 ^ 31-1 The shaping types in C language ar ...

STM32 memory structure 1. Key points 1.1 two storage types: RAM and Flash Ram is readable and writable. On the memory structure of STM32, RAM address segment distribution [0x2000_0000, 0x2000_0000 + RAM size) Flash is read-only. On the memory structure of STM32, the flash address field [0x0800_0000, 0x2000_0000) 1.2 six types of stored d ...

catalogue 1. Euclidean theorem 2. Maximum common divisor 3. Least common multiple 4. Helen formula (find triangle area) 5. Sorting formula 1. Euclidean theorem package Action; public class demo { /* * The idea of finding the least common multiple of the greatest common divisor: according to Euclidean theorem gcd(a,b)=gcd(b,a%b); ...