1. 3.3.3.3. ㅎㅎ logical operator if if else switch while do while for Third step for Learning C++ Programming Repetition Control Structures

2. 2 && Operator (logical AND opterator) && is a boolean operator, so the value of an expression is true or false. ( cond1 && cond2 ) is true only if both cond1 and cond2 are true. 0 9/ 2 0 1 4

3. 3 || Operator (logical OR operator) || is a boolean operator, so the value of an expression is true or false. ( cond1 || cond2 ) is true if either of cond1 or cond2 is true. 0 9/ 2 0 1 4

4. 4 The ! operator (logical NOT operator) The ! operator is a unary boolean operator  unary means it has only 1 operand. ! negates it's operand. ! means "not". (! condition) is true only when condition is false 0 9/ 2 0 1 4

5. 5 5 [ Practice 01 logical operator ]

6. 6 6 [ Explain 01 logical operator ]

7. 7 09 /2 01 4 if structure The if control structure allows us to state that an action (sequence of statements) should happen only when some condition is true: if (condition ) action;

8. 8 8 [ Practice 02 if ]

9. 9 9 [ Explain 02 if ]

10. 10 09 /2 01 4 if else structure The if else control structure allows you to specify an alternative action: if ( condition ) action if true else action if false

11. 11 [ Practice 03 if else ]

12. 12 [ Explain 03 if else ]

13. 13 Syntax switch (expression) { case const-expr : statements; break; case const-expr : statements; break; … default statements; break; } 09 /2 01 4 switch statement

14. 14 [ Practice 04 switch ]

15. 15 [ Explain 04 switch ] 0 ≦ code ≦ 4

16. 16 09 /2 01 4 while Control Structure The while control structure supports repetition - the same statement (or compound statement) is repeated until the condition is false. while (condition) do something; the inside is calledthe inside is called the "body of the loop"the "body of the loop"

17. 17 [ Practice 05 while ]

18. 18 [ Explain 05 while ]

19. 19 09 /2 01 4 do while The do while control structure also provides repetition, this time the condition is at the bottom of the loop.  the body is always executed at least once do somestuff ; while ( condition );

20. 20 [ Practice 06 do while ]

21. 21 [ Explain 06 do while ]

22. 22 09 /2 01 4 for loops The for control structure is often used for loops that involve counting. You can write any for loop as a while (and any while as a for). for (initialization; condition; update) do something;

23. 23 [ Practice 07 for ]

24. 24 [ Explain 07 for ]

25. Thank you