how to read n

The Fget function is prototyped as follows: Char *fgets (char *buf, int n, FILE *fp) Function: Reads a line from the file stream, sends to the buffer, when using the note following points: 1. When encountering newline character or buffer is full,

The usage of read in the shell is detailedOriginal: http://blog.csdn.net/jerry_1126/article/details/77406500The common usage of read is as follows:Read-[pstnd] var1 var2 ...-P Prompt Statement-N Character Count-S shielded Echo-T wait time-D Input

P1061Mobile Service time: 1000ms/Space: 131072kib/java Class Name: Main describes a company with three mobile waiters. If there is a request somewhere, an employee must go to that place (where there are no other employees) and only one employee can

Http://snailwarrior.blog.51cto.com/680306/154704BASH only supports one-dimensional arrays, but there is no limit to the number of parameters.declares an array:declare-a Array(In fact, you don't have to declare it, you assign it directly to the

A simple problem with integersTime limit:5000/1500 MS (java/others) Memory limit:32768/32768 K (java/others)Problem Descriptionlet A1, A2, ..., an is N elements. You need to deal with both kinds of operations. One type of operation is to add a given

Problem C. ICPC GiveawaysTime Limit:20 SecMemory limit:256 MBTopic ConnectionHttp://codeforces.com/gym/100500/attachmentsDescriptionDuring the preparation for the ICPC contest, the organizers prepare bags full of giveaways for the contestants. Each

A company has a large number of win servers. It takes a long time to manually check or run scripts for each login if reinforcement is performed. So I want to log on to the host by writing a program, run the script, capture insecure configurations,

1. Edit the/etc/apt/sources. list file and add any of the following sources: debhttp: // sources 1. Edit the/etc/apt/sources. list file and add any of the following sources. Deb http://www.beerorkid.com/compiz edgy main-edgy Deb

An integer can always be split into the sum of 2 powers, for example:7=1+2+47=1+2+2+27=1+1+1+47=1+1+1+2+27=1+1+1+1+1+27=1+1+1+1+1+1+1There are 6 different ways to split.Another example: 4 can be split into: 4 = + = 1 + 1 + 1 + 1,4 = 2 +

The ui Implementation Method in our game project is implemented by using cocostudio to edit the ui and export exportjson and big image. there is always a problem with this implementation: When a page uses a large number of ui templates, the loading

Question: The prompt "The table is full" appears when you reply to The Forum, which literally means that The data table is full. Since few developers encounter a single table that exceeds 4 GB, discussions between friends can only provide peripheral

Access (): functions related to stat, open, chmod, chown, setuid, and setgid to determine whether a file has the permission to be accessed # includeunistd. h defines the function intaccess (constchar * pathname, intmode). The function indicates that

Basic c: files and operations, basic c operationsFile opening and closing First, define a FILE pointer type in the format of FILE * FILE pointer name ;; FILE * fp; // fp is the defined FILE pointer.   ● Open the file fopen () function in the format

4584: [Apio2016] Rowing time limit:70 Sec Memory limit:256 MB[Submit] [Status] [Discuss] Description in the Seoul city, the Han River traverses things. On the north bank of the Han River, a rowing school is scattered from west to east,

Transfer from http://www.cppblog.com/peija/archive/2010/10/07/128941.htmlEVENTFD is available in kernel version, 2.6.22 later. Viewing the kernel version can be uname-r with the command.1 #include 2int int int flags);This function creates an event

Tree Array Set Chairman Tree Template title ...Main topic:Given a sequence of n A[1],a[2],a[3]......a[n], the program must answer this question: For a given i,j,k, the small number of K in A[i],a[i+1],a[i+2]......a[j] is (1≤k≤j-i+1), and, You can

Lkm-Based System Call hijacking in linux2.4.18 Kernel Linux is now used more and more, so the security issues of Linux are gradually becoming more and more people's attention. Rootkit is a tool set used by attackers to hide traces and retain root

In the programming process, file operations are a common problem. In C ++ builder, you can use multiple methods to operate files, I will introduce this in detail in the following parts: 1. C-based file operations; 2. File Operations Based on C ++; 　　

  What is bigtable? Google's paper gives a full description of it. Literally, it is a large table, which is actually different from the tables of traditional databases we imagine. Loose data is a data between map entry (Key & value) and DB row. When

The simplest method is to use the FileSystemObject object. It is not a built-in VB object, It can be used only after being referenced. 1. FileSystemObject Object Reference"Project/reference/Microsoft startup runtime"In the Object Browser window,