EXERCISES (Software Engineering)

Transcription

1 Chapter 1 1. What is Software Engineering? 2. What is Requirement Engineering? EXERCISES (Software Engineering) 3. What are the Different types of Architectures in Software Engineering? 4. How many subdisciplines can Software engineering be divided into? 5. List 20 programming languages 6. Programming paradigm, based on a programming language technology 7. List 5 platforms that combine computer hardware and an operating system 8. What is Software development process Chapter 2 1. Development life cycle phase 2. Product Life cycle phase and Project lifecycle 3. Release development stage, near the end of a release cycle 4. Software development lifecycle 5. What are the advantages and the disadvantages of a waterfall model? Also how do you overcome the disadvantage of a waterfall model? 6. What are the advantages and the disadvantages of developing the prototype of the system? Chapter 3 1. What are the role of statistical Methods? 2. Major steps to develop a test plan 3. The seven-steps Testing process? Decribe them. 4. Static testing techniques: Definition, types of reviews, roles and responsibilities. 5. Dynamic testing techniques: List, define and give examples. 6. What is GUI Testing? 7. Consider a program for determining the previous date. Its input is a triple of day, month year with the value in range 1 month 12 1

2 1 day year 2025 The possible outputs would be previous day or invalid input date. Design the boundary value test cases Design robustness testing test cases Identify the equivalence class test cases for output and input 8. Consider a program for the determination of nature of roots of a quadratic equation. Values of coefficients are ranged from 10 to 100. The program may outputs one of following words: Not a quadratic equation, Real Root, Imaginary Root, Equal Root Identify the equivalence test cases for output and input domain Identify the test cases using the decision table. Design the boundary value test cases Design robustness testing test cases 9. Consider a simple program to classify a triangle. Its input is a triple of positive integer (say x, y,z) and the data type for input parameter ensure that will be greater than 100 and less than or equal to 300. The program output may be one of following words: Scalene, Isosceles, Equilateral, Not a triangle Identify the equivalence test cases for output and input domain Identify the test cases using the decision table. Design the boundary value test cases Design robustness testing test cases 10. Consider an example of grading the students in an academic institution. The grading is done according to the following rules: Marks obtained Grade Distinction First division Second division Third division Fail Generate test cases using equivalence class testing technique. 2

3 11. Consider a program to determine whether a number is odd or even and print the message NUMBER IS ODD or NUMBER IS EVEN The number may be any valid integer. Design boundary value & equivalence class test cases. 12. Consider a program given below for selection of the largest numbers 1. main() 2. { 3. byte A, B, C; 4. printf("enter three values\n"); 5. scanf("%f%f%f", &A, &B, &C); 6. printf("\n largest value is: "); 7. if( A>B) 8. { 9. if (A>C) 10. printf("%f\n",a); 11. else 12. printf("%f\n",c); 13. } 14. else 15. { 16. if (C>B) 17. printf("%f\n",c); 18. else 19. printf("%f\n",b); 20. } 21. } Design the set of test cases using boundary value analysis technique and equivalence class testing technique Select a set of test cases that will provide 100% statement coverage. Develop a decision table for this program Generate a flow graph for this program 3

4 Draw the DD path graph from flow graph Find the independent paths from the DD path graph. Design a set of test cases that covers all independent paths Find all du-paths and identify those du-paths that are definition clear. 13. Consider a program given below for classification of a triangle. Its input is a triple of positive integer( say x, y,z) and the data type for input parameter ensure that will be greater than 0 and less than or equal to 100. The program output may be one of following words: Scalene, Isosceles, Equilateral, Not a triangle #include<stdio.h> #include<conio.h> 1. int main() 2. { 3. int a, b, c, validinput = 0; 4. printf( Enter the side a value: ); 5. scanf( %d,&a); 6. printf( Enter the side b value: ); 7. scanf( %d,&b); 8. printf( Enter the side c value ); 9. scanf( %d, c); 10. if((a>0) && (a<=100) && (b>0) && (b<=100) && (c>0) && (a<= 100)) { 11. if((a+b) > c) && ((c + a) > b) && ((b + c) > a) { 12. validinput = 1; 13. } 14. } 15. else { 16. validinput = -1; 17. } 4

5 18. if(validinput==1) { 19. if((a==b) && (b==c)) { 20. prinf( The Triangle is equilateral ); 21. } 22. else if((a==b) (b==c) (c==a)) { 23. printf( the triangle is isosceles ); 24. } 25. else{ 26. printf( The triangle is scalene ) ; 27. } 28. } 29. else if (validinput = = 0) { 30. printf( The values do not constitute a triangle ); 31. else{ 32. printf( The inputs belong to invalid range ); 33. } 34. getch(); 35. return 1; 36. } Generate a flow graph for this program Draw the DD path graph from flow graph Find the independent paths from the DD path graph. Design a set of test cases that covers all independent pahts Find all du-paths and identify those du-paths that are definition clear. Design a set of test cases that covers all du-paths but not dc-paths 14. Consider a program given below for computes the commission base on the sale values. 1. Program Commission (INPUT, OUTPUT) 2. Dim locks, stocks, barrels As Integer 3. Dim lockprice, stockprice, barrelprice As Real 4. Dim totallocks, totalbarrels As Integer 5

6 5. Dim locksales, stocksales, barrelsales As Real 6. Dim sales, commission As Real 7. lockprice = stockprice = barrelprice = totallocks = totalstocks = totalbarrels = Input(locks) 14. While NOT(locks = -1) 15. Input(stocks, barrels) 16. totallocks = totallocks + locks 17. totalstocks = totalstocks + stocks 18. totalbarrels = totalbarrels + barrels 19. Input(Locks) 20. End While 21. Output( Locks sold:,totallocks) 22. Output( Stocks sold:,totalstocks) 23. Output( Barrels sold:,totalbarrels) 24. locksales = lockprice * totallocks 25. stocksales = stockprice * totalstocks 26. barrelsales = barrelprice * totalbarrels 27. saels = locksales + stocksales + barrelsales 28. Output( Total sales :, sales) 29. If(sales > ) 30. then 31. commission = 0.10 * commission = commission * commission = commission *(sales ) 34. Else If (sales > ) 35. then 6

7 36. commission = 0.10 * commission = commission *(sales ) 38. Else commission = 0.10 * sales 39. EndIf 40. EndIf 41. Output( Commission is $, commission) 42. End Commission Generate a flow graph for this program Draw the DD path graph from flow graph Find the independent paths from the DD path graph. Find all du-paths and identify those du-paths that are definition clear. Design a set of test cases that covers all du-paths but not dc-paths Chapter 4 1. What is software maintenance? 2. Describe various categories of maintenance. 3. What are the key software maintenance? 4. Describe the software maintenance processes (the international standard). 5. Why is maintenance programming becoming more challenge than new development? 7