Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Lecture7relationalandlogicaloperators 110823181038-phpapp02

816 views

Published on

Published in: Technology, Spiritual
  • Be the first to comment

  • Be the first to like this

Lecture7relationalandlogicaloperators 110823181038-phpapp02

  1. 1. Relational and Logical Operators www.eshikshak.co.in
  2. 2. Relational Operators● Compare two values Result 1 True 0 False● Six Operators, No space between the operator Operator Meaning == Equal to != Not Equal to < Less than > Greater than <= Less than or equal to >= Greater than or equal to www.eshikshak. co.in
  3. 3. Relational Operators● If arithmetic expression on either side of relational operator, than arithmetic expression will be evaluated first and then the results are compared.● All of these operators are known as binary operator, as they required two expressions as operands.● They are used with condition statements www.eshikshak. co.in
  4. 4. Example● if ( value == 0 )●{● printf (“The value you entered was zero.n”) ;● printf(“Please try again.n”) ;●}● else●{● printf (“Value = %d.n”, value) ;●} www.eshikshak. co.in
  5. 5. Relational OperatorsExpression Meaning Result5 == 3 5 is equal to 3 05 != 3 5 is not equal to 3 15>3 5 is greater than 3 15<3 5 is less than 3 0 5 is greater than or equal to5 >= 3 1 35 <= 3 5 is less than or equal to 3 0 www.eshikshak. co.in
  6. 6. Logical Operator● Sometimes we need to test multiple conditions in order to make a decision.● Logical operators are used for combining simple conditions to make complex conditions. www.eshikshak. co.in
  7. 7. Logical OperatorOperator Meaning&& AND|| OR! NOT www.eshikshak. co.in
  8. 8. && (Logical AND)● (expression1 && expression2)● expression1 expression2 Overall Result True True True (non-zero) (non-zero) (non-zero) True False False (non-zero) (zero) (zero) False True False (zero) (non-zero) (zero) False False False (zero) (zero) (zero) www.eshikshak. co.in
  9. 9. && (Logical AND) Expression ResultA = ( 5 != 4 ) && ( 3 + 6 == 9 ) A=1A = ( 5 == 4 ) && ( 3 + 6 == 9 ) A=0A = ( 5 == 5 ) && ( 3 + 5 == 9 ) A=0A = ( 5 == 4 ) && ( 3 + 5 == 9 ) A=0 www.eshikshak. co.in
  10. 10. || (Logical OR)● (expression1 || expression2) expression1 expression2 Overall Result True True True (non-zero) (non-zero) (non-zero) True False True (non-zero) (zero) (non-zero) False True True (zero) (non-zero) (non-zero) False False False (zero) (zero) (zero) www.eshikshak. co.in
  11. 11. || (Logical OR) Expression ResultA = ( 5 != 4 ) || ( 3 + 6 == 9 ) A=1A = ( 5 == 4 ) || ( 3 + 6 == 9 ) A=0A = ( 5 == 5 ) || ( 3 + 5 == 9 ) A=0A = ( 5 == 4 ) || ( 3 + 5 == 9 ) A=1 www.eshikshak. co.in
  12. 12. www.eshikshak.co.in

×