Total notes of loop (while,do-while and for ) with diagram separetly

1. LOOP CONTROL
SHIVRAJ KUMAR
BSc CS in Kalinga Institute of Industrial
Technology (KiiT)
Patia, Bhubaneswar, Odisha

2. LOOP
A loop is define as a block of statement ,which
are repeatedly excuted for a certain number of
times .

3. LOOP
Entry control Exit control
do- while loop
For loop while loop

4. Syntex
For while do-while
For(intiliozation;condition;updation)
{
Statement;
}
While(condition)
{
Statement;
Updation;
}
do
{
Statement;
}
While(condition)

5. The for loop
The for loop allows to execute a set of
instruction until a certain condition satisfied.
EXAMPLE
For(int i=0;i<7;i++)
{
printf(“welcom for loop”);
}

6. Nested for loop
We can also use loop within loop. In nested for loop one
or more for statements are included in the body of the .
Example
For(int i=1;i<=3;i++)
{
For(int j=1;j<=2;j++)
{
printf(“n i*j:%d”,i*j);
}
}
Output
i*j=1
i*j=2
i*j=2
i*j=4
i*j=3
i*j=6

7. THE while loop
The while loop is frequently used in progrm for the
repeated execuation of satement in a loop.Until a certain
condition is satisfied the loop statements are executed.
Example
Int x=1;
While(x<5)
{
Printf(“you are begnners “);
X++;
}
Output
you are begnners
you are begnners
you are begnners
you are begnners

8. The do-while loop
A do...while loop is similar to a while loop, except the fact that it is
guaranteed to execute at least one time.
Example
#include <stdio.h>
int main ()
{
int a = 10;
do
{ printf("value of a: %dn", a);
a = a + 1;
}while( a < 20 );
return 0;
}
Output
value of a: 10
value of a: 11
value of a: 12
value of a: 13
value of a: 14
value of a: 15
value of a: 16
value of a: 17
value of a: 18
value of a: 19

9. Comparision of the while and do-while

10. BY SRKP
.