sc2 lotv

First question: finding the root of a two-second equationpublic class Lianxi1 {public static void main (string[] Args) {System.out.println ("please Enter a value");Scanner sc = new Scanner (system.in);String A=sc.nextline ();int x = Integer.parseint (a);If (x!=0){System.out.println ("please Enter the value of b");Scanner SC1 =new Scanner (system.in);System.out.println ("please Enter the value of c");Scanner SC2 =new Scanner (system.in);String B=sc1.ne

object that is created during deserialization is replaced directly with the object returned in Readresolve (). Private Object Readresolve () throws objectstreamexception {return instance; }} package Com.iter.devbox.singleton; Import Java.io.FileInputStream; Import Java.io.FileOutputStream; Import Java.io.ObjectInputStream; Import Java.io.ObjectOutputStream; public class Client2 {public static void Main (string[] args) throws Exception {SingletonDemo6 SC1 = singletondemo6.getinstance (); Si

(' A ', ' B ')GROUP by SNO) SC WHERE S.SNO=SC. SNOQuestion FourList all students with "1" Grade score higher than 2nd classSELECT S.sno,s.snameFrom S,SC SC1,SC SC2WHERE SC1. cno= ' 1 'and SC2. sno= ' 2 'and SC1. Cno=s.cnoand SC1. SCGRADE>SC2. ScgradeQuestion FiveList the number of students with "1" class scores higher than "2" and their "1" coursesAnd the results of the "2" course.SELECT SC1. The result of

* from C, Sc Where c.cno = Sc.cno and cteacher = ' Li Ming ' and sc.sno = S.sno); Select Sname as student name From s where Sno not in (Select Sno from C, Sc Where c.cno = Sc.cno and cteacher = ' Li Ming '); /c13>2. List of the names of students with two or more (including two) failed courses and their average scores Select S.sno as student number, s.sname as student name, AVG (Sc.scgrade) as average score from S, Sc Where sc.sno = s.sno and Sc.sno in (Select sc.sno from Sc Where sc.sc

characters* @ Cs: the string to be searched* @ CT: The characters to search*/Char * strpbrk (const char * cs, const char * CT){Const char * SC1, * SC2; For (SC1 = cs; * SC1! = '/0'; ++ SC1 ){For (SC2 = CT; * SC2! = '/0'; ++ SC2 ){If (* SC1 = * SC2)Return (char *) SC1;}}Retu

the id,hibernate and do not follow the @id to make the table, Instead, they are generated based on the intermediate table score of the student class and the course entity class.Since the generated table is not compatible with our purpose, so we can choose to manually build the table with the following statement:Test the Save method, which is the persisted objectThere is a student who has studied two courses and has two grades.@Testpublic void Testsave () {/ * * There was a student who took a co

(Representative) of all students whose score is lower than the course number 001) Select's # ', sname from (select student.'s # ', student. sname, score, (select score from SC SC _2 where student.'s # '= SC _2.'s # 'and SC _2. 'C # '= 2) score2 from student, SC where SC.'s # '= student.'s #' and SC. 'C # '= 1) s_2 where score2 9. query the student ID and name of the student who has not completed all the courses Select student.'s # ', Sname from student, SC where student.'s # '= SC.'s # 'group b

1, First Use = for static member variable assignment, from top to bottom, then assign value, there is no = number, the default value;2, execute static constructor, assign value to static member variable;3, First Use = for the instance member variable assignment, from top to bottom, then assign a value, there is no = number, the default value;4, executes the instance constructor, assigns the value to the instance member variable;1 usingSystem;2 usingSystem.Collections.Generic;3 usingSystem.Linq;4

', st1.name) * 10) +Substring ('+ rtrim (convert (char, sc1.prec) +', '+ rtrim (Convert (char, sc1.scale) + ')', 1, patindex ('numeric ', st1.name) * 10) +Substring ('not null', (convert (INT, convert (bit, (sc1.status 8) * 4) + 1,8 * ABS (convert (bit, (sc1.status 0x80)-1) +Right ('Identity ', 9 * convert (bit, (sc1.status 0x80) +Right (',', 5 * (convert (INT, sc2.colid)-convert (INT, sc1.colid) +Right (')'+ 'Go' +''+'', 255 * ABS (sign (convert (

;// //////////////////////////////////////// //////////////////////////////////// RTSP request ParsingLong praseurl (const char * URL, char * szip, int * iport );Int _ tmain (INT argc, _ tchar * argv []){Int sockin, SC1, SC2;Sockaddr_in ADDR;Char * Buf, * szcmd, * URL;Char szip [32];Int nlen, iret, iport;Int IP1, ip2;Long LRET; // Initialize the variableFd_zero ( rfdsock ); Fp = fopen ("1.txt"," W + ");// Allocate a bufferNlen = 10240;Buf = (char *) m

name; SELECT DISTINCT (sc. ' s# '), sname from student, SC where student. ' s# ' =sc. ' s# ' and ' C # ' in (SELECT ' C # ' from SC where ' s# ' =00 2) 11. The grade of "cotyledons" teacher in the "SC" table is changed to the average grade of the course; Update SC INNER JOIN (select SC2. ' C # ', AVG (Sc2.score) score from SC sc2, teacher, course where

*) s;} Char *strrchr (const char *s, int c) {const char *p = s + strlen (s); do {if (*p = = (char) c) return (char *) p; } while (--p >= s); return NULL;} Char *strnchr (const char *s, size_t count, int c) {for (; count-- *s! = '; ++s ') if (*s = = (char) c) return (char *) S;return NULL;} size_t strlen (const char *s) {const char *sc;for (sc = s; *sc! = '); ++sc)/* Nothing */;return sc-s;} Char *strpbrk (const char *CS, const char *ct) {const char *SC1, *

locates the first occurrence of* C (converted to a char) in the string pointed to S.* The terminating null character is considered part of the string;* Therefore if C is ' + ', the functions locate the terminating '.* RETURN VALUES* The Functions STRCHR () return a pointer to the located* character, or NULL if the character does not appear in the string.*/#include char * (STRCHR) (const char *s, int c){const char ch = (char) c;const char *SC;for (sc = 0;; ++s){if (*s = = ch)sc = s;if (17)Return

; Class shallowcopy:icloneable {public int[] v = {1,2,3}; Public Object Clone () {return this . MemberwiseClone (); } public void Display () { foreach (int i-V) Console.Write (i + ","); Console.WriteLine (); } Class Client {public static void Main () { shallowcopy SC1 = new Shallowcopy (); Shallowcopy SC2 = (shallowcopy) sc1. Clone (); Sc1.v[0] = 9; Sc1. Display (); SC2. Display ();

name of at least one course with the student ID "002;Select distinct (SC.'s # '), sname from student, SC where student.'s # '= SC.'s # 'and 'C #' in (select 'C # 'from SC where's #' = 002)11. Change the average score of the Course taught by instructor ye Ping in the SC table;Update SC inner join(Select sc2. 'C # ', avg (sc2.score) score from SC sc2, teacher, cou

student ID and name of at least one course with the student ID "002;Select distinct (SC.'s # '), sname from student, SC where student.'s # '= SC.'s # 'and 'C #' in (select 'C # 'from SC where's #' = 002)11. Change the average score of the Course taught by instructor ye Ping in the SC table; Update SC inner join(Select sc2. 'C # ', avg (sc2.score) score from SC sc2