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Fundamentals of Software Development 1Slide 1 Today’s Summary Statements: Conditionals (if-then-else)Statements: Conditionals (if-then-else) Investigated.

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Presentation on theme: "Fundamentals of Software Development 1Slide 1 Today’s Summary Statements: Conditionals (if-then-else)Statements: Conditionals (if-then-else) Investigated."— Presentation transcript:

1 Fundamentals of Software Development 1Slide 1 Today’s Summary Statements: Conditionals (if-then-else)Statements: Conditionals (if-then-else) Investigated programming patterns:Investigated programming patterns: –Increment, swap, select from cases, absolute value, maximum of two Continued writing your own classes – WordGames! Especially,Continued writing your own classes – WordGames! Especially, –(Today) Part4: Writing classes that require conditionals and fields And that’s going to do it for WordGames!And that’s going to do it for WordGames! Summarized on the next few slides

2 Fundamentals of Software Development 1Slide 2 Conditionals The statements executed depend on a conditionThe statements executed depend on a condition –Note the basic forms and punctuation: if (condition) { statement; statement;......} if (condition) { statement; statement; } else { statement; statement;......} if (x < y) { min = x; min = x; } else { min = y; min = y;} if (naomi.winsRace()) { ++ count; ++ count;} Why are the indentations and curly braces important?

3 Fundamentals of Software Development 1Slide 3 Programming Patterns We saw that many problems fit a “pattern” that experienced software developers recognizeWe saw that many problems fit a “pattern” that experienced software developers recognize –And hence can easily code, from experience Today, we saw these patterns:Today, we saw these patterns: –Swap –Absolute value –Maximum of two –Select from cases –Increment Next time: Looping patterns

4 Fundamentals of Software Development 1Slide 4 Programming patterns – summary temp = x; x = y; y = temp; if (y < 0) { x = -y; } else { x = y; } if (x > y) { z = x; } else { z = y; } swap absolute value maximum of two if (x >= 90) { z = ‘A’; } else if (x >= 80) { z = ‘B’; } else if (x >= 70) { z = ‘C’; } else if (x >= 60) { z = ‘D’; } else { z = ‘F’; } x = x + 1; Increment (for counting) Select from cases Keep these patterns in mind, to help you with similar problems that you encounter

5 Fundamentals of Software Development 1Slide 5 What’s Ahead? Before the next session:Before the next session: –Do Homework 9 (no late homework!) Including the reading and the associated online quiz on Ch 6Including the reading and the associated online quiz on Ch 6 Turn in the finished WordGames after completing Part 4Turn in the finished WordGames after completing Part 4 –Next session: Hello World, part 1!Hello World, part 1! Next week – Exam 1:Next week – Exam 1: –Review session Tuesday night, Mar :00 – 9:00 pm O157 –Exam Wednesday night, Mar 30 - CSSE (Steve) – O157 CSSE (Salman) – O169 Reminder: Find the homework assignment from the Schedule page of the CSSE 120 Angel site angel.rose-hulman.edu Our usual suggestion: Routinely do your homework in F-217 (CSSE lab). A student assistant is there every Sunday through Thursday evening, 7 pm to 9 pm, so you can get immediate answers to any questions you might have.


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