SYMBOLIC CONSTANTS OR MACRO:
In this #define is a macro used for a constant value to be assigned in the program.
for example: pi its value is being fixed as 3.14 so
we can assign:
ex: #define pi 3.14
Rules for symbolic constants:
1.symbolic names have the same form as variable names.these are written in capitals to differ from ordinary variables.
2.No blank space between the pound sign '#' and the word define is permitted.
3.'#' must be the first character in the line.
4.A blank space is required between #define and symbolic name and between the symbolic name and the constant.
5.#define statements must not end with a semicolon.
6.after definition,the symbolic name should not be assigned any other value within the program by using an assignment statement.For ex: STRENGTH=200;is illegal.
7.symbolic names are NOT declared for data types .its data types depends on the type of constant.
Popular Posts
-
Now I will show you how to retrieve the data posted from a HTML file in a JSP page. Consider an html page that prompts the user to enter his...
-
Accessing the Standard CGI Variables: To build the successful web application, you often need to know a lot about the environment in which ...
-
INTRODUCTION TO 'C': C is a programming language developed at AT & T's Bell laboratories of USA in 1972.it was designed by d... -
SQL aliases can be used with database tables and with database table columns, depending on task you are performing. SQL column aliases are u...
-
Learning about Events (Continue) Lets program the Form_Load event. "MsgBox" is Visual Basic command that launch a message box. for... -
Steps to follow: 1. Write Person.java as shown below in Code-11.3.a under polypackage directory. (You are welcome to do this work using eit...
-
The Command Button's KeyPress, KeyDown and KeyUp Events The events that will be mentioned in the following pages are commonly used, and ... -
The SQL AVG aggregate function selects the average value for certain table column. Have a look at the SQL AVG syntax: SELECT AVG(Column1) FR...
-
package interfaceexercise; // Define an interface with three abstract methods. // Any class that implements this interface has to // impleme...
-
We will use the Customers table to illustrate the SQL LIKE clause usage: FirstName LastName Email DOB Phone John Smith John.Smith@yaho...
No comments:
Post a Comment