What are the purpose of each in c++?

if statements?

switch statements?

multiway if?

nested loops?

rand?

srand?

seed?

If statements - This statement is used to check the condition.

if (condition)

{

statement

}

If the condition is true, then statement will run, else not.

Switch statement-This statement is used for long conditions. It is a substitute for if, else conditions

switch (a)

{

case1: statement 1//if a=1

break;

case2: statement 2 / /if a=2

break;

...

default:statement//if a is not equal to any of the cases.

Multiway if-In this statement, if elseif and else were there.

if (condition1)

{

statement 1

}

elseif (condition2)

{

statement 2

}

...

else

{

statement n

}

Nested loops-This statements are used when we use if-else conditions in other if, else conditions.

if (condition 1)

{

if (condition 2)

{

if (condition 3)

{

statement 3

}

else

{

statement 4

}

}

]

rand () - This method is used for generating random number. The expression is

number=rand () %50;

It will generate a random number ranges between 0 to 50.

srand () - This method is used to set the starting value for random number series.

srand (time (NULL));

seed () - It is a method for initializing the same random series, it is passed in srand ().