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what is method , class, switch , if else nested if,etc.

what is method , class, switch , if else nested if,etc.

Grade:

1 Answers

Neer Varshney
76 Points
9 years ago

u may refer book for these definitions written by sumita arora, these are given very well there though i may tell you in short:

 

1.

if/else: it is used to check if a condition is true or not.

for ex. if i want to check if a number is even or odd... and if odd multiply by 2.

we will do it like this:

int a;

if(a%2==0)

{

 //no. is even so we will not do anything

}

else 

{

a*=2; // no. is odd so multiply by 2

}

 

2.

if we use one more if inside an if than we call it nested if...

it is used if i have to do the following:

 if i want to check if a number is even or odd... and if odd multiply by 2 and if even than check if it greater than 5 and than multiply by 2.

we will do it like this:

int a;

if(a%2==0)

{ if(a>5)

{a*=2;}

 }

else 

{

a*=2; // no. is odd so multiply by 2

}

 

3.

switch do the same work as of if-else.. it is used when we have multiple conditions to check,.,,

format:

switch(a)

{

case 1:

break;

case 2:

break;

case 3:

break;

default:

exit(0);

}

 

4.class

it is a collection of dissimilar data types, by default all members are private...it implements the concepts of OOP(object oriented programming).

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