### Loop and Iteration

**A loop statement allows us to iterate a/a group of statement multiple times.**

You can write a loop statement using *for* or *while* :

### While loop

```
while (
```*condition* )

{

* continue execute this statement if the condition is true *

}

### For loop

```
for (
```* initialization*; *condition* ; *action after each iteration* )

{

* continue execute this statement if the condition is true *

}

### Practice

using namespace std ;

for( int counter = 1; counter <= 10; counter++)

{

cout<<"Value of "<< counter << " x 4 is " << counter*4 << endl;

}

for( int counter = 1; counter <= 10; counter++)

{

cout<<"Value of "<< counter << " x 4 is " << counter*4 << endl;

}

### Output

//When counter =

Value of 1 x 4 is 4

//Whole output

Value of 1 x 4 is 4

Value of 2 x 4 is 8

Value of 3 x 4 is 12

Value of 4 x 4 is 16

Value of 5 x 4 is 20

Value of 6 x 4 is 24

Value of 7 x 4 is 28

Value of 8 x 4 is 32

Value of 9 x 4 is 36

Value of 10 x 4 is 40

Value of 2 x 4 is 8

Value of 3 x 4 is 12

Value of 4 x 4 is 16

Value of 5 x 4 is 20

Value of 6 x 4 is 24

Value of 7 x 4 is 28

Value of 8 x 4 is 32

Value of 9 x 4 is 36

Value of 10 x 4 is 40