We all know that there is a header file string.h in C language, but there is no string type in C language. [Strings] are usually placed in constant strings or character arrays. String constants are suitable for string functions that do not modify them. The function prototypes declared in the header file string.h are also …
(C language) common character functions and string functions Read More »
sort 1. Merge Sort concept Algorithm Analysis and Implementation Non-recursive algorithm implementation summary 2. Counting sort concept Analysis of Algorithms summary Stability of Sorting Algorithms 1. The concept of stability 2. Analyze the stability of various sorting algorithms 1. Direct insertion sort 2. Hill sort 3. Direct selection sort 4. Heap Sort 5. Bubble sort …
Precompiled 1. The translation environment and execution environment of the program 1.1 Translation environment 1.2 Preprocessing -> Compile -> Assemble -> Link 1.3 Operating Environment 2. Detailed preprocessing 2.1 Predefined symbols 2.2 #define 2.3.1 #define definition macro 2.3.2 #define substitution rule 2.3.3 # and ## 2.3.4 Macros with side effects 2.3.5 Macros and functions 2.3 …
This issue introduces 🍖The main introduction: how is the pointer type defined, what is the difference from the general type definition, why is it so distinguished, what benefits will it bring, pointer [dereference] and pointer offset operations Deep understanding 👀. Article directory Preface 🍖 Types of pointers 🍖 Dereference of pointers 🍖 Offset of pointer …
Short circuit phenomenon (1) The following [expression] is one of the short-circuit phenomena x & y & z; If x is false, return false directly; if x is true, execute y; execute z only if both x and y are true. example Let’s look at the following code and find the values of x, y, …
1. Title content: Twin [primes] refer to adjacent primes with an interval of 2. For example, the smallest twin prime pair is 3 and 5, as well as 5 and 7 (5 is repeated but counted as 2 groups). 2. Input format: input N, find out the number of groups of twin primes between 2 …
The key words are in the front, pay attention not to print in reverse order I wrote a question today and came across a very good question. I will share it here with you. I will use a variety of methods to solve it. The specific content of the topic is as follows: Write a …
How many ways can you reverse the characters in a string, or look at mine Read More »
Swap sort: void sort(int score[],int n) { int i,j,temp; for(i=0;i<n-1;i++) for(j=i+1;j<n;j++) { if(score[j]<score[i]) { temp=score[i]; score[i]=score[j]; score[j]=temp; } } } [Bubble sort] : void sort(int score[],int n) { int i,j,temp; for(i=0;i<n-1;i++) for(j=0;j<n;j++) { if(score[j+1]<score[j]) { temp=score[j]; score[j]=score[j+1]; score[j+1]=temp; } } } [Selection sort] : void sort(int score[],int n) { int i,j,k,temp; for(i=0;i<n-1;i++) { k=i; for(j=i+1;j<n;j++) …
Table of contents First, the mutual conversion between 1. Representation 2. Calculation 2. Variables 1. Operator 2. Common variable definitions Several special-defined variables 3. Structure 1. The difference between enumeration and structure 2. Structure definition 3. Use of structure First, the mutual conversion between 1. Representation Binary: 0B Decimal: write numbers directly Hexadecimal: 0X …
Embedded c – first lesson (hex conversion, structure, variable) Read More »
Require: Write a program to test whether a triangle can be formed by three sides. The test method is that the sum of any two sides is greater than the third side. Output format: if the result can be formed, output YES, otherwise output ERROR DATA In fact, it is very simple. Use the AND …
C language to test whether three sides can form a triangle Read More »