GURU NANAK DEV CO-ED POLYTECHNIC

GURU NANAK DEV CO-ED POLYTECHNIC
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Friday, 30 September 2011

(iv) Switch Statement


Switch statement is an extension of if.......else statement. This permits any number of branches. The syntax is
     

(iii) Nested if....else statement



            This statement is formed by joining if..........else statements either in the if block or in the else block or both. The syntax is

(iii) else.....if statement


else.....if adder statement is used to take multi-way decision. This statement is formed by joining if.......else statements in which each else contains another if......else. The syntax is,

(ii) if....else statement



                        if........else statement is used to execute one group of statements if the test condition is true or other group if the test condition is false. The syntax is

Decision making statements


Decision making statements are used to skip or to execute a group of statements based on the result of some conditions. The decision making statements are,
            (i)         Simple if statement
            (ii)        if.......else statement
            (iii)       nested if
            (iv)       switch statement

(i)         Simple if statement
            The Simple if statement is used to execute or skip one statement or group of statements for a particular condition. The syntax is
                                    if(test condition)
                                                {
                                                            statement block;
                                                }
                                    next statement;

            When this statement is executed, the computer first evaluates the value of the test condition. If the value is true, statement block and next statement are executed sequentially. If the value is false, statement block is skipped and execution starts from next statement.
Conditions
(i)         The opening and closing curl brackets {} are must if the statement block
contains more than one statement.
(ii)        The brackets around the test condition are must
(iii)       The test condition must be relational or logical expression
(iv)       Statement block is called body of the if statement and it contains one or
more statement blocks.




#include<stdio.h>
            main( )
            {
                        int salary;
                        char good;
                        scanf (“%d %c”, &salary,&performance);
                        if (performance= =‘good’
                                    {
                                                salary=salary+1000;
                                    }
                                    printf(“%d”, salary)’
                        }
            This program tests the performance of an employee. If the performance of an employee in an organization is good, then Rs.1000/-  will be added to his salary. For other grades no incentives are added.

C Programming- Assignment Operators


Assignment operators are operators, which are used to simplify the coding of certain type of assignment statement. The syntax is
                                    variable operator = expression
where,
            variable            -           valid user defined name
operator           -           + - * / %
expression        -           constant (s)or a variable(s) or operator(s)

Example

            The table given below lists the operators with example.
Operator
Meaning
+=
value of LHS variable will be added to the RHS value and is assigned to LHS variable.
-=
RHS value will be subtracted from LHS variable and is assigned to LHS variable.
*=
value of LHS variable will be multiplied by the RHS value and is assigned to LHS variable.
/=
value of LHS variable will be divided by the RHS value and is assigned to LHS variable.
%=
value of LHS variable will be divided by RHS value and the remainder will be stored in the LHS variable.

Wednesday, 14 September 2011

Data Types

Dear students,
I think we are too much concentrating on our practical classes, than that of our theory. Even though, practicals are more important than that of mugging up some text and vomiting it on a piece of paper; we cannot proceed further with programs if we are not convenient in its usage.
Hence, Let us spare time for theoretical discussions also.
Objectives:
In this lesson let us discuss about :
1.declare (name) a local variable as being one of C's five data types
2.initialise local variables
3.perform simple arithemtic using local variables

Tuesday, 13 September 2011

HTML Tags / Codes / Web Page Design


html tags, html codes, html help

html tags, html codes, html help

HTML Tags / Codes / Web Page Design


Dear Students,
    
     Today let us learn how to design your own web site and write your own HTML code (hypertext markup language) will play a major role in your success. Not only will learning HTML coding provide you with the freedom to update your own HTML documents, but it will also save you a great deal of money, as you will be able to avoid hiring a professional web designer, for your office / company in your professional career.

However, before reviewing the HTML tags,  the following section will assist you in creating an HTML web page.