Fundamental Programming Lect 5
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This document discusses programming fundamentals and decision making in programs. It provides examples of programs that make decisions based on conditions. The first example determines if a student passed or failed based on marks in two subjects and GPA. The second example determines if a student receives a grade of A based on total marks and GPA. Further examples are provided to determine car type based on price and engine size, and display name based on student roll number. The document concludes with tasks for readers to design programs to display city names from codes and calculate base pay from annual salary and pay type.
Fundamental Programming Lect 5
- 1. Instructor : Muhammad HarisAll Rights Reserved to Department of Computer Science – GCU Lahore Programming Fundamentals
- 2. Consider this Example Determine status of a Student from marks of two of his subjects and his GPA If either the marks for both of the subjects are greater than 40 or GPA is greater than 2, he’s considered passed Programming Fundamentals | Lecture-5 2
- 3. Programming Fundamentals | Lecture-5 3 START READ m1, m2, GPA DISPLAY “Passed” STOP (m1 > 40 AND m2 > 40) OR GPA > 2 YesNo DISPLAY “Failed”
- 4. Another Example Determine whether a student has got Grade A from his total marks and his GPA If marks are greater than 80 and less than 90 OR GPA is greater than 3.7 and less 3.8, he will be graded as “A” Programming Fundamentals | Lecture-5 4
- 5. Programming Fundamentals | Lecture-5 5 START READ tm, GPA DISPLAY “A” STOP (tm > 80 AND tm < 90) OR (GPA > 3.7 AND GPA < 3.8) YesNo DISPLAY “Other than A”
- 6. Try this Yourself Determine whether a car is of mid-size type or not from its price (in millions) and engine capacity (in cc) If price is between 1 million and 2 million or if engine capacity is between 1000 and 1500, a car is considered to be a mid-size car Programming Fundamentals | Lecture-5 6
- 7. Programming Fundamentals | Lecture-5 7 Decision Box Yes No > > <= < < >= == == != != != == <= <= > >= >= < Operator Opposite > <= < >= == != != == <= > >= <
- 8. Decision leading to Decisions In real-world problems, it frequently happens that result of a decision leads to further decision making This way computer programs prove to be much more useful Programming Fundamentals | Lecture-5 8
- 9. Consider this Example For two numbers, do the following If second number is greater than 0 ○ Divide them If second number is less than 0 ○ Multiply them If second number is equal to 0 ○ Add them Programming Fundamentals | Lecture-5 9
- 10. Programming Fundamentals | Lecture-5 10 START READ num1, num2 DISPLAY ans STOP ans = num1 / num2 num2 > 0 YesNo num2 < 0 ans = num1 * num2ans = num1 +num2 <= > Yes < No ==
- 11. Another Example For given roll number of a student, display his name Assume that there are only three students (first three roll numbers of your section) Programming Fundamentals | Lecture-5 11
- 12. Programming Fundamentals | Lecture-5 12 START READ rollNo DISPLAY “Ali” STOP rollNo == 2 YesNo != == Yes <No rollNo == 4 rollNo == 8 DISPLAY “Rehman” DISPLAY “Hassan” DISPLAY “No Such Student” YesNo
- 13. Try this Yourself For given day number of the week, display the corresponding day Programming Fundamentals | Lecture-5 13 Day Number Week Day 1 Monday 2 Tuesday 3 Wednesday 4 Thursday
- 14. Tasks (to be done by next lecture) Display the name of a city against given city code Design your solution for 4-5 cities only Calculate base pay from given annual salary and pay type Base pay = salary / Dividing Factor Programming Fundamentals | Lecture-5 14 Pay type Description Dividing Factor 1 Weekly 52 2 Bi-monthly 24 3 Monthly 12
- 15. Programming Fundamentals | Lecture-5 15 BE PREPARED FOR QUIZ IN NEXT LECTURE
Editor's Notes
- #10: Note: A decision box always leads to two paths, not more than two. But in this example you can see more than two paths. Hence one decision box is not sufficient to achieve this solution