COMPROG:UNIT#3:ITERATIVE CONTROL STATEMENTS

are used when the program needs to perform looping operations until the given condition is true. Control comes out of the loop statements once condition becoming false

There are 3 types of iterative control statements in C language. They are,

• for statement

• while statement

• while do statement

• do while statement

There are 2(two) types of looping statements

In such type of loop, the test condition is checked first before the loop is executed. Some common examples of this looping statements are:

1. 1. While loop

2. 2. For loop

In such type of loop, the loop is executed first. Then condition is checked after block of statements are executed. The loop executed at least one time compulsorily. Some common example of this looping statement is:

1. 1. do-while loop

for(expr1; expr2; epr3)

{

statement

)

expr1- variable initialization

i = 0, k = 1, j = 2

expr2 - conditional checking

i>5, j<3, k=3

exp3 = increment/decrement

i++,i--

While (condition)

{

statements

}

Condition :

a>5, i<10

do

{

statement

} while(condition)

Condition :

a>5, i<10