This article will help you understand sizeof and strlen thoroughly, come and read it! Foreword: When you are initially learning C language, you may have some confusion about the use of sizeof and strlen. Today I will use an article to teach you about sizeof and strlen. Article directory This article will let you fully […]
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Briefly describe the difference between sizeof and strlen
Briefly describe the difference between sizeof and strlen 1. The difference between strlen and sizeof 1. What is strlen? 2. What is sizeof? 3. Briefly describe the difference between the two (1), the difference between types (2), the difference in use (3) The difference in calculation 2. Precautions for using strlen and sizeof 1. Note […]
Pointer and array sizeof, strlen size
Directory What is the name of the array? char arr[] = {‘a’,’b’,’c’,’d’,’e’,’f’};//[a b c d e f] char arr[] = “abcdef”;//[a b c d e f \0] char* p = “abcdef”; Two-dimensional array int a[3][4] = { 0 }; What is the array name? The array name is usually the address of the first element […]
Calculate array or pointer size with sizeof and strlen
The meaning of the array name One.sizeof and int a[ ] Create an integer array int a[] = {<!– –>1,2,3,4}; 1. sizeof (array name) indicates the size of the entire array. 4*4=16 printf(“%d\\ “,sizeof(a));//4*4=16 2.a represents the address of the first element, and a + 0 is also the address of the first element. Address […]
Array (sizeof and strlen) in C language
1. Array creation int type int arr1 [10] = {<!– –>0};//The number of elements is defined, and the first element is assigned a value of 0, then the other elements are all 0 int arr2 [10] = {<!– –>1, 2, 3, 4, 5};//Define the number of elements, but only assign values to the first five […]
The difference between sizeof and strlen in C language
Directory 1. sizeof keyword 2. strlen function 3. Return value type 4. Objects of action 5. Calculation method 6. Scope of application 7. Usage scenarios The usage scenario of sizeof: The usage scenario of strlen: 8. Examples Example of sizeof: Example of strlen: 9. Precautions 10. Comprehensive application In C language, sizeof and strlen are […]
[The difference between sizeof and strlen in C language]
The difference between sizeof and strlen in C language Detailed explanation of sizeof and strlen in C language 1. Unary operator 1.1. Detailed explanation of the sizeof unary operator 1.2, sizeof code part 1.2.1, sizeof routine 1 1.2.2, sizeof routine 2 1.2.3, sizeof routine 3 2. Explain the strlen function in detail 2.1, strlen code […]
Teach you how to distinguish between strlen and sizeof
Foreword I believe that when many veterans come into contact with C language for the first time, they will inexplicably confuse strlen and sizeof in their minds. Here is to distinguish strlen and sizeof for everyone. All code links in this article: test_6_20 hunter/C_NS – Code Cloud – Open Source China (gitee.com) strlen: A library […]
STL – Episode 1 What? sizeof(list<int>) turned out to be 24
I wrote this piece of code before, 1<br>2<br>3<br>4<br> printf(“%d | %d \ “, sizeof(std::list<int>), sizeof(std::list<long long>));<br>/*<br>24 | 24<br>*/<br> First of all, we need to know what a list is: Click into std::list , you can see the following code, it can be seen that the list seems to have no members? But he inherits a […]
sizeof and strlen! ! !
Definition sizeof() is a unary operator, which can find the size of the space occupied by variables (types), regardless of what is stored in the memory, only the size of the memory strlen() is a function that calculates the length of a string. It scans from a certain location in the memory (it can be […]