This document provides an introduction to decision making and loops in system programming. It discusses different types of decisions like if, if else, and nested if statements. It also covers different types of loops including for, while, and do while loops. Examples of the syntax and flow charts are given for each.

1. IN THE BEAUTIFUL NAME OF ALLAH ALMIGHTY…

2. PRESENTED BY :
• Muhammad Naveed Anjum
• Muhammad Kamran Malik
• Mian Rahat Bashir
• Rao Sultan Mahmood

3. DON’T ASK IRRELEVANT AND ILLOGICAL QUESTIONS…
Think Positive
Be Positive
Act Positive

4. Decision & Loops
SYSTEM PROGRAMING

5. INTRODUCTION
Decision:

6. INTRODUCTION
Loops
Iteration/Repeatition

7. TYPES OF DECISION
• If
• If else
• Nested if
• Nested if else

8. IF STATEMENTS
• If statements
Syntex:
if(test expression)
{
statements
}

9. IF STATEMENTS
Flow Chart

10. IF ELSE STATEMENTS
• If else Statements
Syntex
if(test Expression)
{
Statements
}
else
{
Statements
}

11. IF ELSE STATEMENTS
Flow Chart

12. NESTED IF STATEMENTS
• Syntex
if(test expression)
{
If(test expression)
{
Statements
}
}

13. NESTED IF STATEMENTS
Flow Chart

14. TYPES OF LOOPS
 For Loop
 While Loop
 Do While Loop

15. FOR LOOP
• Syntex
for(Initialization;Condition;Increament)
{
Statements
}

16. FOR LOOP
Flow Chart

17. EXAMPLE
• #include <stdio.h>
• int main ()
• {
• /* for loop execution */
• for( int a = 10; a < 20; a = a + 1 )
• {
• printf("value of a", a);
• }
• return 0;
• }

18. WHILE LOOP
• Syntex
Initialization
while(condition)
{
Statements
Increament
}

19. WHILE LOOP
• Flow Chart

20. EXAMPLE
• #include <stdio.h>
• int main ()
• {
• /* local variable definition */
• int a = 10;
• /* while loop execution */
• while( a < 20 ) { printf("value of a: %dn", a); a++;
• }
• return 0;
• }

21. DO WHILE LOOP
Syntex
do
{
Statements
Increament/Decreament
}
while(Condition)

22. DO WHILE LOOP
Flow Chart

23. EXAMPLE
• #include <stdio.h>
• int main ()
• {
• /* local variable definition */
• int a = 10;
• /* do loop execution */
• do { printf("value of a: %dn", a);
• a = a + 1;
• }
• while( a < 20 );
• return 0;
• }

24. BREAK STATEMENT
Syntex

25. BREAK STATEMENTS
Flow Chart

26. CONTINUE STATEMENTS
• Syntex

27. CONTINUE STATEMENTS
Flow Chart

28. SWITCH STATEMENTS

29. SWITCH STATEMENTS
Flow Chart

30. GO TO STATEMENTS
Syntex

31. HAPPY ENDING ;)