20141211--C # constructor,

20141211--C # constructor,

Namespace fengzhuang {class Class2 {private string _ Name; private string _ Code; public string _ Sex; public Class2 () // constructor {_ Sex = "male "; // The default value of _ Sex is "male" Console every initialization. writeLine ("constructor");} public string nv () // function {_ Sex = "female"; return _ Sex ;}}}

 

Static void Main (string [] args) {Class2 op = new Class2 (); // It exists. You only need to initialize the class and call the function, Console. writeLine (op. _ Sex); op. nv (); // call the function, Console. writeLine (op. _ Sex); Console. writeLine (); Console. readLine ();}

Using System; using System. collections; using System. collections. generic; using System. linq; using System. text; namespace xueshengxuanke {class Program {static void Main (string [] args) {Console. writeLine ("Enter the number of students:"); int n = int. parse (Console. readLine (); Console. writeLine ("Enter student ID, name, score"); ArrayList arr = new ArrayList (); for (int I = 0; I <n; I ++) {student s = new student (); Console. write ("student ID:"); s. code = int. parse (Console. readLine (); Console. write ("name:"); s. name = Console. readLine (); Console. write ("score:"); s. score = decimal. parse (Console. readLine (); arr. add (s) ;}decimal sum = 0; for (int I = 0; I <n; I ++) {student avgs = (student) arr [I]; sum + = avgs. score;} ArrayList newarr = new student (). maopao (arr); student ss1 = (student) newarr [0]; Console. writeLine ("Name: {0} highest score: {1}", ss1.Name, ss1.Score); int x = n-1; student ss2 = (student) newarr [x]; console. writeLine ("Name: {0} segmentation: {1}", ss2.Name, ss2.Score); Console. writeLine ("average score: {0}", sum/n); for (int I = 0; I <n; I ++) {student avgs = (student) newarr [I]; Console. writeLine ("student ranking: * ********************************* "); Console. writeLine ("student ID name score ranking"); Console. writeLine ("{0} {1} {2} {3}", avgs. code, avgs. name, avgs. score, I + 1);} Console. readLine ();}}}

 

Using System; using System. collections; using System. collections. generic; using System. linq; using System. text; namespace xueshengxuanke {class student {private int _ Code; public int Code {get {return _ Code;} set {_ Code = value ;}} private string _ Name; public string Name {get {return _ Name;} set {_ Name = value;} private decimal _ Score; public decimal Score {get {return _ Score ;} set {_ Score = value ;}/// <summary> // receives the arraylist. After sorting, return arraylist /// </summary> /// <param name = "arr"> arraylist of student class objects </param> /// <returns> </returns> public ArrayList Maopao (ArrayList arr) {int n = arr. count; for (int I = 0; I <n; I ++) {for (int j = I; j <n; j ++) {student s1 = (student) arr [I]; student s2 = (student) arr [j]; if (s1.Score <s2.Score) {student zhong = new student (); zhong = s1; arr [I] = s2; arr [j] = zhong ;}}return arr ;}}}