done in vb.net, want this to be basic, want minor mistakes to see if i can fix them myself

Design and develop a program that validates the value a user enters into a TextBox control to ensure that the entry is a valid telephone number. The application should accept a maximum of 12 characters. When the user clicks a button, the program should determine if the entry is of the form 999-999-9999, where the character 9 represents any number. If the entry is determined to be a telephone number, display an appropriate message, along with the separate substrings that compose the telephone number without the dashes. If the entry is not a telephone number, then display a message as to the reason why the entry is not a valid telephone number, clear the TextBox control and set focus to th... click for more

A2 + B2 = C2, where A, B, and C are the three sides of the triangle. Also, don't forget that the sum of any two sides (for any triangle) is greater than the third side. What is the difference between testing and debugging?

A2 + B2 = C2, where A, B, and C are the three sides of the triangle. Also, don't forget that the sum of any two sides (for any triangle) is greater than the third side. Consider the following questions What is the difference between testing and debugging? Design 10 test cases and explain the purpose of each of them. The purpose is one to two sentences. For example the purpose of (3, 4, 5) is to test that the program correctly identifies a right angle (9 + 16 = 25). Ok, you need nine more. Is it possible to design a complete set of test cases that will uncover all the bugs in the program? Justify your answer. Identify one test case.

Done in vb.net, just make this basic, cause i want to add some more features to it

The MiniCalc application was designed to perform basic math calculations: +, -, *, /. However, in its present form, this application needs some improvements. 1. Test all operators with the values 8 and 2 to make sure it works as expected. 2. Test the program with 99999 + 99999. This should raise a 'System.OverflowException' exception. 3. Test the program with '9 divide 0'. The result shows 'infinity'. Actually, the calculation should raise an exception 'System.DivideByZeroException'. Modify the program so that the user input is validated before the divide operation is performed. For a divide by zero, modify the program to raise an exception, then add the code to handle the except... click for more

Computer Programming

Multi-dimensional arrays could cost a lot of memory. How much memory (how many bytes) does it take to create an integer array of 3 dimensions, with each dimension having 1000 elements (i.e. int myHugeArrays[1000] [1000] [1000])? Explain your answer.

Model used to analyze body’s response to a bolus injection of this antibiotic

This model is used to analyze the body's response to a bolus injection of this antibiotic: B(t) = B0e(-k*t) Using this model, and data provided for the average plasma concentration data in ug/ml with time in hours : a) perform linear regression on this penicillin clearance using the normal equations b) plot the concentration data and re-plot the log of the concentration data to show that it appears linear. c) Determine initial concentration, B0, and elimination rate constant, k Concentration (ug/ml) Time (min) 89 22 60 44 30 88 15 132 7 176 a) for linear regression ln(B) = ln(B0)- Kt I'm not sure how to use the normal equations in MATLAB to plot this? We're not supposed ... click for more