C# structure
A structure is a collection of variables. For instance, if you have a
student structure then you will group the student number, student name,
and sex together.
To create a structure, you must use struct keyword followed by the name
of the structure. Variables of the structure must be put in curly
brackets. In the example below, we create a structure named student
containing stnumber, stname, and stsex variables.
Example:
struct student
{
public string stnumber;
public string stname;
public string stsex;
}
You can use the student structure as shown below:
student st=new student();
st.stnumber="M001";
st.stname = "Dara
Yuk";
st.stsex="M";
Console.WriteLine("{0}\t{1}\t{2}", st.stnumber,st.stname,st.stsex);
Constructors of C# structure
In c#, a structure can have constructors. A constructor is a
special member of the structure. It can be used to initialize variables
of the structure when its object is created. The name of constructor
must be the same as the name of structure. The constructor called
automatically when the keyword "new" is used to create the objects of
the structure.
Example:
struct student
{
public string stnumber;
public string stname;
public string stsex;
public student(string id,string name,string sex){
//constructor
stnumber=id;
stname=name;
stsex=sex;
}
}
student st=new student("s001","Dara Yuk","M"); //create object
Console.Write("{0}\t{1}\t{2}",st.stnumber,st.name,st.sex);
Note: a structure in C# can have other members such as
methods, properties, and events. However, if you have these kinds of
things in your program, you should consider using class instead.
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 Posted comments | Phan Neth, CICI, year 3: Now it is ok teacher. I can connect to database and select data from it. Than you so much teacher !!!!!
04-30-2013 | Dara: Copy and paste the link below to the address box to learn how to connect C and Mysql server:
http://www.worldbestlearningcenter.com/index_files/cpp-tutorial-connect_mysql_database.htm
04-27-2013 | Phan Neth, CICI, year 3: Hello teacher i want to connect C programming language to MySql server but it have problem. When i compile it always error with library " my_global.h
and mysql.h", so how should i do?
04-27-2013 | Phan Neth, Year 3 at CICI,: I have some problem about connection to mysql server. So I hope teacher can help me. Thank !!!!
04-26-2013 | Federico: Output appears the same also this way:
static void Main(string[] args)
{
int[,] myArray = new int[5, 5];
int row, i;
int n = 1;
for (row = 0; row < 5; row++)
{
for (i = 0; i < 5; i++)
{
myArray[row, i] = n;
if (row == 1 && i == 2) Console.Write(" \t");
else Console.Write("{0} \t", n);
if (n!=26) n++;
if((i+1)%5==0) Console.WriteLine("\n");
}
}
Console.ReadLine();
}
04-13-2013 | Dara: Let pointer p point to the index 1 elem (value=2) of the array.
int *p= a+1;
Let pointer q point to the index 6 elem (value=5) of the array.
int *q= a+6;
-Expression q-p is the subtraction of address of the index 6 element and the address of index 1 elem of the array. So, the result is 5.
-Expression *p+*q is the sum of the value of index 1 elem (2) and the value of index 6 elem (5). So, the result is 7.
In conclusion, the output is 57.
03-28-2013 | Anushka : Find the output of following code
main()
{
int a[] = {1,2,9,8,6,3,5,7,8,9};
int *p= a+1; int *q= a+6;
cout<< q-p <<*p+*q; }
03-28-2013 | Dara: Option Explicit
Dim Cn as New ADODB.Connection
Private Sub_Form_Load()
Cn.Open "Provider=SQLOLEDB; Data Source=ServerName; Initial Catalog=DatabaseName;UserID=UserName; Password=Passw"
End Sub
You will need to replace ServerName with the name of your server (installed SQL Server), DatabaseName withe the name of your data file that you want to connect to, UserName with the name of the user to login to SQL Server, and Passw with the password used to login to SQL Server.
03-13-2013 | More>>> |
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