The Development of VB (Console Application) Program - Research Paper Example

Aims The aim of paper is to develop VB (Console Application) program that will a). read integer numbers a and b from keyboard finds the smallest as well as the largest prime numbers between [a,b]. b). allows users to enter values of n and x via a graphical interface, and calculates/displays cos(x) c). identify speed of the vehicle, type of driver and the amount applicable Methods The scripts id developed in Microsoft Visual studio workspace and the where operations begin to find the right answer. This functions aims at developing values that would be used for various calculations. During the development of the code that was used in solving the problems, the input was put in small increments producing solutions which were related to each iteration. This means the iteration worked well during the development of the code. Every iteration was approached with its trade-off in case of delays we waited for the result before inputting new codes. In the coding there were no errors thus, testing the code was found to be unnecessary. In case an error was discovered the resulting chord was to be tested using Microsoft Visual studio iterative statements for the first order iteration and the second order iteration. The do statement is used when unknown iterations are required. Then the initialization is then performed to ensure that the code is well tested. The first case checks whether the program detects an error when the input year is invalid and the month is valid. The second test case checks whether the program detects an error when the input year is just valid but the month is less than one. The third test is similar, but it checks to make sure an error is detected if the month given a valid year. The test cases can be partitioned into two equivalence classes. The first three test cases are invalid inputs, while the last two are valid inputs. Thus, the first three test cases should cause the program to generate an error message. If the program does not generate an error message, then we have exposed a bug. The program should produce correct output for the last two test cases. The tester should make sure that the output produced is indeed correct. In general, it is a good idea to classify all test cases as to whether they are valid inputs and the program should produce valid output, or whether they are valid inputs and the program should generate an error message. RESULTS Question 1- Write a VB (Console Application) program that reads 5 integer numbers from keyboard, stores the numbers in an integer array, and determines if each given integer is a prime number or not (use a Do Loop). The program should give an appropriate message accordingly. By definition a prime number is a natural number (>1) that has no divisors except 1 and itself. Using your program enter following 5 numbers, and determine which is prime: 229, 271, 47, 31, 97 Bonus (extra 10%): Write a VB (Console Application) program that reads 2 integer numbers a and b from keyboard, and finds the smallest as well as the largest prime numbers between [a,b]. Using your program find the smallest and the largest prime numbers between 12345 and 54321. 54319 12343 Question 2- The following fines and demerit points will apply to Learner, P1 and P2 license holders for over speeding in all areas except school zones: Question 3- Trigonometric functions, such as sine and cosine are normally evaluated on computers by using a truncated infinite series. The same approach is used to compute the inverse of these functions. For instance, a truncated series used to calculate the cos of an arbitrary angle x is in which x is in radians. Write a program in VB that allows user to enter values x and n. Then the program calculates cos(x) by above formula using n first terms of the series and a DO LOOP. Using your program find and report values of , and for n=2, 3, 4, and 5. cos15o cos38o cos55o Compare your results with the result of ‘Calculator’ application available in MS-Windows. Bonus (extra 10%): Develop a ‘Windows Forms’ application which allows user to enter values of n and x via a graphical interface, and calculates/dispays cos(x) when ‘Calculate’ button is clicked (see following Figure). User can exit the program by clicking ‘Exit’ button. You can use any part of your VB code developed in Question 3. For Bonus part of Question 3 you need to submit VB source code written in Form1.vb, and a snapshot of your programming showing cos(x) for n=4, and x=45 degrees. DISCUSSION In the coding there were no errors thus, testing the code was found to be unnecessary. In case an error was discovered the resulting chord was to be tested using Microsoft Visual studio iterative statements for the first order iteration and the second order iteration. The do statement is used when unknown iterations are required. Then the initialization is then performed to ensure that the code is well tested. The first case checks whether the program detects an error when the input speed is invalid and the fine is valid. The second test case checks whether the program detects an error when the input speed is just valid but the fine is less than one. The third test is similar, but it checks to make sure an error is detected if the fine given a valid speed. The test cases can be partitioned into two equivalence classes. The first three test cases are invalid inputs, while the last two are valid inputs. Thus, the first three test cases should cause the program to generate an error message. If the program does not generate an error message, then we have exposed a bug. The program should produce correct output for the last two test cases. The tester should make sure that the output produced is indeed correct. In general, it is a good idea to classify all test cases as to whether they are valid inputs and the program should produce valid output, or whether they are valid inputs and the program should generate an error message. CONCLUSION The aim was to carry out VB programming to solve three problems. Using the data provided the values were determined as well as various coefficients successfully. Read More