This document discusses different types of loops in C programming: for loops, while loops, and do-while loops. It provides examples of each loop type and flowcharts showing how they work. For loops use an initialization, condition, and counter to iterate through a code block. While loops check a condition and run the code block while the condition is true. Do-while loops run the code block first and then check the condition, running the block again if it's true. Flowcharts are included to visualize the logic flow of each loop type.

1. LO0PS
IN
C-PROGRAMMING
By
Dhurgham Fahem
Hani Ali

2. Outline
 What is the loop
 For Loop
 While Loop
 Do…while Loop

3. What is the loop
Hello World
printf("*********** Hello World *************");
printf("*********** Hello World *************");
printf("*********** Hello World *************");
printf("*********** Hello World *************");
.
.
.
printf("*********** Hello World *************");1

4. 2

5. Flowchart loop
Start
StatementCondition
True
End
False
3

6. for ( init; condition; counter)
{
statement(s);
}
for Loop
for ( int x=0; x<=5; x=x+1)
{
printf("******* Hello World *******");
}
4

7. 5

8. Start
Code block
x<=5
End
x=x+1
Flowchart (for) loop
True
False
6

9. Start
End
Sequence
Flowchart (for) Nested loop
TrueFalse
True
False
Condition 1
Condition 2
End
7

10. while Loop
while(condition)
{
statement(s);
}
int a = 10;
while( a < 20 )
{
printf("value of a: %dn", a);
a++;}
8

11. 9

12. Flowchart (While) loop
Start
a++
a < 20
End
True
False
10

13. Flowchart Nested loop
Statement
True
False
End loop
Condition
True
False
End loop
Inner loop
Outer loop
Start
Condition
11

14. do…while Loop
do
{
statement(s);
}while( condition );
do
{
printf("value of a: %dn", a);
a = a + 1;
}while( a < 20 );
12

15. 13

16. Flowchart (do…while )loop
Start
value of a
a < 20
End
True
False
14

17. Flowchart do while Nested loop
Start
Statement
Condition
TrueFalse
End loop
Condition
TrueFalse
End loop
Inner loopOuter loop
15

18. References
www.tutorialspoint.com
https://www.facebook.com/tutorialspointindia
https://twitter.com/tutorialspointindia