unix practice exercises

---------------------------------------------------First questionint x = 1,y = 1;if (x++==2 ++y==2)//false True =false; x=2,y=2{x = 7;}System.out.println ("x=" +x+ ", y=" +y);The output is:x=2,y=2---------------------------------------------------Second questionint x = 1,y = 1;if (x++==2 ++y==2){x = 7;}System.out.println ("x=" +x+ ", y=" +y);The output is:X=2,y=1---------------------------------------------------Third questionint x = 1,y = 1;if (x++==1 | ++y==1)//true |　　false = true; x=2,y=2

Programming ApplicationsIncluding the use of database provided by the API functions and Embedded SQL Direct operation of the database method, and so on.How to learn UNIX programmingProgramming is a meticulous task, especially for UNIX under C programming. Whether the reader is interested in UNIX programming, or because of the pressure of work forced to choose

, FG, CmdLine); Sigprocmask(Sig_setmask, prev, NULL); /* Unblock SIG_CHLD */WAITFG (PID); } else/* EXEC background */{addjob (jobs, PID, BG, CmdLine); Sigprocmask (Sig_setmask, prev, NULL); /* Unblock SIG_CHLD */printf ("[%d] (%d)%s", Maxjid (Jobs), PID, cmdline); }/* DONT ' T forget to close the pipefd in TSH process otherwise the second program would stall output until TSH exits */close (pipefd[0]); Close (pipefd[1]); Return } else

PHP Exercises, PHP Practice In PHP, define a constant define (' hovertree ', ' Q ', ' true '), and the following statement correctly outputs "what to ask" is (). A, Echo hovertree; B, Echo Hover Tree; C, Echo ' Hovertree '; D, Echo ' Hovertree ';Answer: http://hovertree.com/tiku/bjaf/qlnkuqbi.htm The name of the variable in PHP must begin with (). A, # B, @ C,? D, $Answer: http://hovertree

/findresults11File:/home/kiosk/desktop/rh124-exam1 Page 2 of 2Find all lines containing ich in the file/usr/share/mime/packages/freedesktop.org.xml, will findCat/usr/share/mime/packages/freedesktop.org.xml | grep "Ich" >/root/linesThe lines are copied to/root/lines in sequence.File, the/root/lines file does not contain spaces, and the contents of the line are the exact/usr/share/mime/packages/freedesktop.org.xml original line of the source fileCopy%s/^\ *//g/* Remove all spaces that begin with s

Database practice full notes comprehensive exercises (1) query of teaching information and comprehensive exercise information This instance runs on Oracle10g through: I. Question requirements The instructor's teaching information is stored in the SCHEDULE table:-------------------------------- TEACHERID WEEKDAY HASCOURSE ------------------------------ 1 2 1 1 3 1 2 1 1 3 2 1 1 2 1 --------------------------

Practice LNMP full-process Shell programming: if syntax exercises, lnmpshell #! /Bin/bash # DATE: wed Jan 17 1 # ywyankerp@163.com # this is a yankerp # The Nginx service is being installedROOT_ID = 0 ML =/usr/local/srcNGINX_ML =/usr/local/src/nginx-1.12.2PML =/usr /local/src/php-5.6.27QD = 'netstat-anpt | grep 80 | awk '{print $7}' | cut-d "/"-f2 | cut-d ": "-f1 'addr = 'IP a | grep eno16777728 $ | awk' {p

} + } - } the returnb; * } $ Public Static DoubleExpectDoubleb[]) {Panax Notoginseng Doublesum =0; - for(inti =0; i ) { thesum = sum +B[i]; + } A DoubleExp = sum/10000; the returnexp; + } - Public Static DoubleFangcha (DoubleExpDoublea[]) { $ Doublesum =0; $ for(inti =0; i ) { -sum = sum + (A[i]-exp) * (A[i]-exp); - } the Doublef = math.sqrt (sum/10000); -

first day. N=1 for in range (5,0,-1= (n+1) print(n)6, Healthy recipes output. List of 5 different ingredients, please print out what they may consist of There is a dish name. Diet = ['Tomato','Broccoli','Cucumber','Steak','Shrimp'] forXinchRange (0,5): forYinchRange (0,5):if not(x==y):Print("{}{}". Format (Diet[x],diet[y]))7. The drawing of the pentagram. draw a red pentagram graphic. from Import*fillcolor ("red") Begin_fill () while True: Forward (+) Right (144) if abs (POS ()) :

Exercise request: Randomly generate 30 arithmetic questionsHere is the program code:1#include"stdafx.h"2#include"stdio.h"3#include"time.h"4#include"stdlib.h" //with machine function header file5 6 voidprint ()7 {8Srand ((int) Time (0));9 for(intI=0; i in; i++)Ten { One intx; A intA=rand ()% -; - intB=rand ()% -; - thex=1+rand ()%4;//randomly produce four different algorithms - Switch(x) - { - Case 1: {printf ("%d+%d=\t\t", A,

Practice Requirements:(CentOS 7) Two host A/b, where a host to build the lamp environment, B host as Server for NFS storage MARIADB data, and deploy Discuz to do testing, to achieve the database available.A host: httpd2.4 PHP (Modular mode) Mariadb Nfs-utilsB Host: Nfs-utils DiscuzIdeas:One, the solution B host for a host of MARIADB when the data directory problem (two directories of the genus owner must be a MySQL user, and the UID must be the same)A

input numbers and symbols varA =document.getelementbyid ("one"). Value, b=document.getelementbyid ("the"). Value, C=document.getelementbyid ("FH"). Value; //The function method is called, and the returned value is received varnum =method (A,B,C); document.getElementById ("JG"). innerhtml=num; } Number 1:Number 2:Symbols:4 Full selection/All-in-one effect. If the check box below is not selected, the Select all check box is automatically unchecked and checked automatically if all

An array is a combination of data of a data type. An entity in an array is called an element or member of an array.Example one: creation and extraction of dataExample two: How to create and assign an arrayExercise One: Enter the age of nine people into an array from the consoleExercise two: Seeking the sum of agesExercise three: Seeking the sum of Ages, method twoExercise Four: Enter the number of classes, according to the number of people to enter the results, to find the average scoreExercise

data to write. The type can be a string, anarray, or a stream resource (as mentioned above). If data specified as a stream resource, the cached data stored in stream here is written to the specified file, which is similar to using the stream_copy_to_stream () function. The argument data can be an array (but not a multidimensional array), which is equivalent to file_put_contents ($filename, Join (", $array)). 　　flags 　　flagsThe value can be a c

;　　　　　　 option>--Please choose--option> 　　　　　　 option>Singoption> 　　　　　　 option>Danceoption> 　　　　 Select>TD> TR> TR> TD>Image upload:TD> TD>inputtype= "File">TD> TR> TR> TD>Self Introduction:TD> TD>textareaMaxleng= " the"cols= " the"rows= "3">textarea>TD> TR> TR> TDcolspan= "2"> Tablewidth= "100%"Border= "0"cellspacing= "0"cellpadding= "0"> TR> TD>inputtype= "Reset"value= "Reset">TD> TD>inputtype= "Submit"value= "Submit">TD> TR>Table> TR>Table>Body>HTML>"Little

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