C

C Language Learning 001: Let the program run, C Language Learning 001 runDownload compilation tool MinGW-Minimalist GNU for WindowsCompile and run # Include int main () {puts ("C rocks! "); Return 0 ;} Compile and run the program and enter "gcc

Basic operations on Binary Search Tree (BST) in C Language We explained Binary Tree in the previous blog. This time, we will implement the Binary Search Tree (Binary Search Tree), also known as Binary Sort Tree ). Therefore, BST is short for BST.

Count the number of characters and the number of characters 1 // question: enter a line of characters to calculate the numbers of English letters, spaces, numbers, and other characters. 2 // program analysis: Use the while statement, the condition

The C language obtains the source code of the web page and the C language source code. It seems interesting to study this one day. I didn't understand anything at the beginning. Now I feel a little interesting to write a piece of code. Next I will

Rotate and print order n matrices clockwise (0th questions) and matrices 4thQuestion requirements Problem description: clockwise rotation of the n-order matrix Example input: 4 1 2 3 4 12 13 14 5 11 16 15 6 10 9 8 7 Sample output: 1 2 3 4 5 6 7 8 9 1

Use setjmp and longjmp for exception handling in C Language Error handling is a problem that must be solved in any language. If 100% of the Error Code cannot be correctly executed, a mechanism for error handling is required. Exception Handling is

Memory alignment and memory alignment principles # Pragma pack (8) Struct TestStruct4 { Char; Long B; };Struct TestStruct5 { Char c; TestStruct4 d; Long e; }; # Pragma pack () Question: A), sizeof (TestStruct5) =? B) How many bytes are left behind c

Linux character device-kernel-state data and user-state data transfer, linux Linux character device-mutual transmission of kernel-mode data and user-mode data _ IO, _ IOR, _ IOW, and _ IORW For the ioctl number of devices supported by the system,

Introduction to Variable Parameter ellipsis, variable parameter ellipsis Introduction to Variable Parameter ellipsis C allows you to define the number of parameters and functions with uncertain types. For example, the standard function printf in C

Talk C chestnuts together (114th back: C language instance-semaphores for thread synchronization) Hello, the last time we talked aboutSemaphores for Thread Synchronization. When you leave the rest of your time, your words will go right. Let's talk

Gcc-4.7.4, centosgcc-4.7.4 compiled under CentOS 6.6x64 Recently, gcc of the old version found some problems, so I tried to upgrade it. After reading some tutorials, I tried it and found that all the tutorials had some minor problems. So I will

Talk C together (90th back: C language instance -- use pipelines for inter-process communication 3) Hello, everyone. In the previous session, we talked about the example of using pipelines for inter-process communication. This example is as follows:

C language-06 complex data types-03 pointer,-06 data type-03 pointerPointer variable definition Variable type * variable name; # Include int main () {// pointer: You can access the corresponding bucket based on an address value. // int before the

Differences and relationships between scanf (), gets (), and getchar () functions in C LanguageAs we all know, scanf and gets are functions that input data from the keyboard. The basic function functions are not described in detail here. They only

Talk C chestnuts together (70th back: C language instance -- string initialization function) Hello, everyone. We talked about the string SEARCH example in the previous review. The example here is:String initialization Function. When you leave the

[C Language] query in two-dimensional array, Young's Matrix # Include # include int find_Num (int * arr, int n) {assert (arr); while (* arr  

[C Language] Reverse string order There are multiple methods to reverse string order. The following methods are used to convert strings: // non-recursive string inversion: char * reverse (char * str) {if (! Str) {return NULL;} int len = strlen (str);

Differences between a C string pointer and a character arrayBoth character arrays and character pointer variables can be used to store and operate strings. However, the two are different. When using this function, you must pay attention to the

C language: Simulate the strstr function. If it is a substring, the string following the substring is output; otherwise, null is output. # Define _ CRT_SECURE_NO_WARNINGS 1 # include # include # include char * my_strstr (char * arr1, char * arr2)

How many combinations of numbers 1, 2, 3, and 4 are implemented in C language? # Include # include int main () {int I, j, k; int count = 0; int number; for (I = 1; I