1. FLOW OF CONTROL

2. FLOW OF CONTROL Contents
1. Statements
2. Selection statements
i) if statements
ii) switch statement
3. Iteration statements
i) for loop
ii) while loop
iii) do-while
4. Jumb statement
i) goto
ii) break
iii) continue

3. STATEMENTS
The instructions given to the computer to perform the action. {
statement1 ;
statement2 ; . }
Statements are terminated with a
semicolon. The simplest statement is
the Empty or null statement.

4. SELECTION STATEMENT if statement nested ifs if-else-if ladder
switch statement

5. if STATEMENT
If the condition evaluates to true, a course-of-action is followed otherwise the course of action is ignored
Syntax
if(expresssion) {
statement; }

6. Nested ifs STATEMENT Syntax if(expresssion1) { -- -- if(expression2)
[else
statement2;] }
else
body of else;

7. if-else-if STATEMENT Syntax if(expresssion1) { statement 1; } else
if(expression2)
statement2;
statement 3;

8. switch STATEMENT Syntax switch(expresssion) {
case constant 1 : statement sequence 1;
break;
case constant 2 : statement sequence 2;
case constant 3 : statement sequence 3; :
case constant -1 : statement sequence n-1;
[default : statement sequence n ] }

9. ITERATION STATEMENT
Allow a set of instructions to be performed repeatedly until a certain condition is fulfilled
for loop
while loop
do-while loop

10. for Loop Syntax Execute
for(intializationexpression(s); test-expression; update expressions) {
body- of – the – loop; }
Execute
4th
Execute
2nd
Execute
1st
Execute
3rd

11. while Loop Syntax Initialization expression; while (test-expression) {
statements; :
update expressions; }

12. do-while Loop Always execute at least once Syntax
Initialization expression; do {
statements; :
update expressions;
} while (test-expression)

13. JUMP STATEMENT
goto statement
break statement
continue

14. goto STATEMENT goto label; --- label :
Transfer the program control to specified place by a label
Syntax
goto label;
---
label :
label is a user supplied
identifier and can appear
either before or after goto.

15. break STATEMENT Enables a program to skip over part of the code
while (test exprsn) {
statement 1;
if (val >2000)
break; :
statement2 }
statement3;
for(inilialize; test- exprsn;
update) {
statement 1;
if (val >2000)
break; :
statement2 }
statement3; do {
statement 1;
if (val >2000)
break; :
statement2 }
while(test exprsn)
statement3;

16. continue STATEMENT
Instead forcing termination, it forces the next iteration of the loop to take place, skipping any code in between
while (test exprsn) {
statement 1;
if (val >2000)
continue; :
statement2 }
statement3;
for(inilialize; test- exprsn;
update) {
statement 1;
if (val >2000)
continue; :
statement2 }
statement3; do {
statement 1;
if (val >2000)
continue; :
statement2 }
while(test exprsn)
statement3;

17. Diagrammatic representation
Flow of control
Statements
Selection
Statements
Iteration
Statements
Jump Statement if
stme nts
switch
stmen ts
for
stmen ts
while
stmen ts
do-while
stmen ts
goto
stmen ts
break
stmen ts
continue
stmen ts