Computer Programming for Engineers Week 7 Basic Programming

Outline Introduction to Software Engineering –Software development life cycle (SDLC) –SDLC VS A programming assignment, involving: –Variable declaration (int and string) –if-else-elseif –for-while

Crisis in Software Industry Needs for competitive software are increasing rapidly at the moment –More functionalities –Better performance –Higher expectation –Needs of innovative ideas –Needs of competent programmers –Smaller world –Etc.

Introduction to Software Engineering Software engineering is a systematic approach to the engineering of software. Software engineering involves development, management and other issues on the engineering of software. The process of software development is called Software Development Life Cycle (SDLC).

Basic SDLC Requirem ent Analysis Desi gn Develop ment Test ing

What we do in SDLC vs Requirem ent Analysis Desi gn Develop ment Test ing Understa nding questions & assignme nts Algorithm developm ent & Flowchart s Program ming Debug ging

Question #1 A grading system –This grading system is based on criterion referenced evaluation –The criteria are as follows: → A 70-79→ B 60-69→ C 50-59→ D 0-49→ F

Question #1-1 Develop the grading system which: –Run for 5 rounds –Accept one input [score] per round

Question #1-1 Concept Output Please enter your score: 75 Your grade is B Please enter your score: 43 Your grade is F Please enter your score: 66 Your grade is C Please enter your score: 71 Your grade is B Please enter your score: 49 Your grade is F

Question #1-2 Develop the grading system which: –Run for n rounds –Accept one input [round] –Accept one input [score] per round

Question #1-2 Concept Output Please input the number of students: 3 Please enter your score: 75 Your grade is B Please enter your score: 43 Your grade is F Please enter your score: 66 Your grade is C

Question #1-3 Develop the grading system which: –Run forever unless told to stop –Accept one input [score] per round –Accept one input [continue or not] per round

Question #1-3 Concept Output Please enter your score: 75 Your grade is B Would you like to continue? (y/n): y Please enter your score: 43 Your grade is F Would you like to continue? (y/n): y Please enter your score: 66 Your grade is C Would you like to continue? (y/n): n

Assignment Develop the grading system which: –Run forever unless 999 is input as a score –Accept one input [score] per round –Count and display the total of each grade –Calculate and display the average score –Calculate and display the average GPA of the class

Assignment Concept Output Please enter your score: 75 Your grade is B Please enter your score: 43 Your grade is F Please enter your score: 999 Program end. Calculating the scores… Total students with A: 0 Total students with B: 1 Total students with C: 0 Total students with D: 0 Total students with F: 1 Average student score: 59 Average student GPA: 1.5