Programming Basics if then else, switch, operators

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  • ----- Meeting Notes (12/28/11 19:20) -----

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  • 1. TRIVUz Academy PF02 Class Id:Programming Fundamentals MS Alam TRIVUz Founder, TRIVUz NetworkTRIVUz Academy
  • 2. TRIVUz AcademyRecap PF01 TRIVUz Academy
  • 3. We learn before We Define Computer & Program Define Computer Programming Programming Process Programming Language Inputs & Outputs Define Logical Processing Variables Data TypesProgramming Fundamentals TRIVUz Academy www.trivuzacademy.com
  • 4. We will learn today Conditional Statement If… then … else Switch statement OperatorsProgramming Fundamentals TRIVUz Academywww.trivuzacademy.com
  • 5. Conditional Statement• Conditional statements are the set of command used to perform different actions base on different conditions• In PHP we have the following conditional statements: • if • if else • else if • switch TRIVUz Academy
  • 6. If statement execute some code only if statement is trueTRIVUz Academy
  • 7. If…TRIVUz Academy
  • 8. If… ifTRIVUz Academy
  • 9. If… if (conditional)TRIVUz Academy
  • 10. If… if (conditional) {TRIVUz Academy
  • 11. If… if (conditional) { // statement to be executedTRIVUz Academy
  • 12. If… if (conditional) { // statement to be executed }TRIVUz Academy
  • 13. If… Example: if ($math < 33) { $result = “Failed!”; }TRIVUz Academy
  • 14. If…else statement execute some code if statement is true and some other code if statement is falseTRIVUz Academy
  • 15. If…else… if (conditional) { // statement if true }TRIVUz Academy
  • 16. If…else… if (conditional) { // statement if true } elseTRIVUz Academy
  • 17. If…else… if (conditional) { // statement if true } else { // statement if falseTRIVUz Academy
  • 18. If…else… if (conditional) { // statement if true } else { // statement if false }TRIVUz Academy
  • 19. If…else… Example: if ($math < 33) { $result = “Failed!”; } else { $result = “Passed!”; }TRIVUz Academy
  • 20. If…else if…else statement execute some code if statement is true And some other code if statement is falseTRIVUz Academy
  • 21. If…else if…else if (conditional) { // statement if true } else if (conditional){ // statement if false and else if true } else { // statement if all false }TRIVUz Academy
  • 22. If…else if…else if (conditional) { // statement if true } else if (conditional){ // whichever matches first } else if (conditional){ // whichever matches first } else if (conditional){ // whichever matches first } else if (conditional){ // whichever matches first } else { // statement if all false }TRIVUz Academy
  • 23. If…else if…else Example: if ($avg > 100) { $grade = "Invalid"; } else if ($avg > 90 and $avg < 100 ) { $grade = "A+"; } else if($avg > 80 and $avg < 90) { $grade = "A"; } else { $grade = "F"; }TRIVUz Academy
  • 24. switch statement Select one of many block of code to executeTRIVUz Academy
  • 25. switch switchTRIVUz Academy
  • 26. switch switch (value)TRIVUz Academy
  • 27. switch switch (value) {TRIVUz Academy
  • 28. switch switch (value) { case 1: // some code to executeTRIVUz Academy
  • 29. switch switch (value) { case 1: // some code to execute break;TRIVUz Academy
  • 30. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break;TRIVUz Academy
  • 31. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; default: // nothing matches, do itTRIVUz Academy
  • 32. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; default:  similar to else in if..else // nothing matches, do itTRIVUz Academy
  • 33. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; default: // nothing matches, do it }TRIVUz Academy
  • 34. switchswitch (n){case label1: code to be executed if n=label1; break;case label2: code to be executed if n=label2; break;default: code to be executed if n is different from both label1and label2;} TRIVUz Academy
  • 35. switch<html><body><?php switch ($x) { case 1: echo "Number 1"; break; case 2: echo "Number 2"; break; case 3: echo "Number 3"; break; default: echo "No number between 1 and 3"; }?></body> TRIVUz Academy</html>
  • 36. PHP Operators Operators are used to operate on valuesTRIVUz Academy
  • 37. OperatorsArithmetic Operators TRIVUz Academy
  • 38. OperatorsAssignment Operators TRIVUz Academy
  • 39. OperatorsComparison Operators TRIVUz Academy
  • 40. OperatorsLogical Operators TRIVUz Academy
  • 41. Thank You MS Alam TRIVUz Founder, TRIVUz Academy trivuz@gmail.com