Make some adjustments: Person p1 = new Person(cousebookname); Pass the variable name only. public Person(String name) { courseName = name; } Make the constructor public. solved How to pass parameter to constructor [closed]
You probably want lambda or std::function, or std::bind auto l_add_100 = [](double x) { return add_two_numbers(x, 100); }; std::function<double(double)> f_add_100 = [](double x) { return add_two_numbers(x, 100); } auto b_add_100 = std::bind(add_two_numbers, std::place_holder::_1, 100); or with non hard coded number double y = //… auto l_add_y = [y](double x) { return add_two_numbers(x, y); } std::function<double(double)> … Read more
This is taken from your code: char *compar; if(i==0){ sprintf(&compar,”%c%c%c%c”,code[0],code[1],code[2],code[3]); } The problem here is that you declare compar as a pointer to char, but it is uninitialized. So, it has an undefined value. When you fill it with sprintf, you just write somewhere in the memory, and apparently, you write over the variable nombre_instruction. … Read more
The following line: vector<int> clusters(k,0); Defines a random-access collection of k total integers each with an initial value of 0. clusters[id] accesses the integer value stored at index id in the vector. clusters[id]++ increments the integer value stored at index id. This works because operator [] on a vector returns a reference to the indexed … Read more
first of all your bool prime; is not initialized. Second it should be initialized inside do while() loop and it is better to move that variable declaration there: bool prime = false; // move it here and initialize for (i = 2; i < n; ++i) { if (n % i == 0) prime = … Read more
memset sets 16 bytes (not bits) to 0. This is correct because the size of your array is 16 bytes, as you correctly stated (4 integers x 4 bytes per integer). sizeof knows the number of elements in your array and it knows the size of each element. As you can see in the docs, … Read more
Can you write this method on the DbContext class? Then you could write something like in a separate new class file (e.g. ActionContextExtensions.cs or something like that): public partial class ActionContext : DbContext { public IEnumerable<T> SelectAll<T>() where T: class { return this.Set<T>().AsEnumerable(); } } This returns the type as defined by the generic parameter … Read more
First of all, your for loop at the end (the one which gave you an error). Contains a misspelled property. The integer_array.length should actually be integer_array.Length The ‘length’ property is ‘Length’ in C# And for making sure that your code is looped until any of the correct input keys have been pressed. You can encapsulate … Read more
When you say you accept 9 numbers and want to change it to be 10 numbers, I’m assuming that you mean that the number is 9 digits in length, and you want it to be 10 digits. The maximum size of a 32-bit integer is ~2.1 billion. You could use a long instead, which is … Read more
I want to know how should I put it online or on the web that everybody can access to it? You can either look into an ASP.Net webhost and host your project online (most cost money), so that they can use it interactively. Or, you can put your project files in an Open Source website, … Read more
all the computationally expensive stuff can be done in opencv. so using python for the wrapper won’t cost you much computationally. 4 solved Image processing using Python and OpenCV on a Raspberry PI [closed]
Try this: MessageBox.Show(String.Format(“{0}, {1}, {2}:”, city, zip, state)); This go replace {0} with the variable city, {1}with the variable zip and {3} with state. String.Format converts the value of objects to strings based on the formats specified and inserts them into another string. If you are new, read getting started with the String.Format method New … Read more
With DotNetZip you can read the files in a zip file as easy as: string zipPath = @”c:\example\MyFile.zip”; using (zip archive = ZipFile.OpenRead(zipPath)) { foreach (ZipArchiveEntry entry in archive.Entries) { System.Console.WriteLine(entry.); } } 2 solved How to Read file properties from a zip file ..? [closed]
To do that in C# , here’s the syntax string status = Convert.ToInt32(inputBalance.Text) > 0 ? “UNSETTLED” : “SETTLED”; VB.NET Syntax: IIf(someBool, “true”, “false”) C# Syntax: someBool ? “true” : “false”; solved IIF Syntax Error
You are using QString, and QString is not from std namespace. When you directly type std::QString you will get an error, because QString is not defined in std namespace, but when you type using namespace std, You can use everything from std namespace without directly typing std (what is defined in that namespace), but not … Read more