Obviously I can’t use your exact code, or you would not have asked the question, but this is a similar idea, done a bit differently, and also using the fgets which was causing you trouble. It works by searching each line for digits, and non-digits. Note that I have #define MAXLEN 2000 to be generous, … Read more
So here’s my two cents: Get a clear idea of the flow of information. (e.g. if you’re pulling information from somewhere via RESTful web services, you’ll likely need to get the client API documentation and build your API calls around the existing methods. If the client (Twilio) is pushing information to you, then it will … Read more
Let us assume that msg->dup() returned void * — that is, a pointer to void, which means a pointer whose type the compiler doesn’t track. But you may know, e.g. because of documentation on that function, or because certain preconditions have been met, that msg->dup() will return a pointer to CMessage. Before you can use … Read more
These various steps can be achieved by simply wrapping the database call in some error handling. The overall structure would be something like this: try { // Perform your SELECT statement } catch (SqlException e) { // Log the error, send an email, etc. } As for what goes where the comments are, that’s up … Read more
A naive implementation (no inet_pton) would user 4 numbers and print them into a char array #include <stdio.h> int inc_ip(int * val) { if (*val == 255) { (*val) = 0; return 1; } else { (*val)++; return 0; } } int main() { int ip[4] = {0}; char buf[16] = {0}; while (ip[3] < … Read more
Two problems. First, you cannot reorder the elements of a set. Their ordering criteria is determined upon construction, it is a fundamental part of the object. This is necessary in order for it to achieve O(log n) lookups, insertions, and deletions, which is part of the promises of std::set. By default, it will use std::less<Edge>, … Read more
It is parsed as: b = (a++)++ + a; This is an invalid expression. The increment operator can’t be applied twice as (a++) isn’t an lvalue. The tokenizer isn’t context-aware and will match the longest token possible, so it is not parsed as the syntactically valid a++ + ++a. (That still would be invalid code, … Read more
(As suggested, I’ve replaced my previous salt generation method with something that should be more secure) To generate a random salt: public static string GenerateRandomSalt(RNGCryptoServiceProvider rng, int size) { var bytes = new Byte[size]; rng.GetBytes(bytes); return Convert.ToBase64String(bytes); } var rng = new RNGCryptoServiceProvider(); var salt1 = GenerateRandomSalt(rng, 16); var salt2 = GenerateRandomSalt(rng, 16); // etc. … Read more
The problem with getting uncommented code “from a senior (buddy) of mine“, is that you have absolutely no guidance and zero reference for the algorithms used in the code. Many times this leaves you in a worse position than you would be in if you had taken the time to learn the math involved and … Read more
Please change you code with below code [WebMethod] public decimal ConvertGOOG(decimal amount, string fromCurrency, string toCurrency) { WebClient web = new WebClient(); string apiURL = String.Format(“http://finance.google.com/finance/converter?a={0}&from={1}&to={2}”, amount, fromCurrency.ToUpper(), toCurrency.ToUpper()); string response = web.DownloadString(apiURL); var split = response.Split((new string[] { “<span class=bld>” }), StringSplitOptions.None); var value = split[1].Split(‘ ‘)[0]; decimal rate = decimal.Parse(value, CultureInfo.InvariantCulture); return rate; … Read more
You’re printing cars – the collection – instead of car – the current iteration. Change it to Console.WriteLine(car);. 1 solved How to properly print the content of a list in C#
Expressions in C are not formulas. This: int age = CurrentYear – BornYear; Does not mean that the value of age will always be CurrentYear – BornYear. It means that at that point in the code, age is set to CurrentYear – BornYear based on the current value of those variables. Both of those variables … Read more
A couple of killers in the Tableau::delete method: The function will not compile because of the use of the delete keyword as the function’s name elements[index+1] will allow reading elements[nbElements] Which may or may not be out of the array’s bounds, but is certainly one more than intended. Try instead: template <class T> void Tableau<T>::remove(size_t … Read more
My guess is you’re trying to set the Classproperty of all the students in the list at once. You can do this with the ForEachextension method (include using System.Linq): class Student { public int Id { get; set; } public string Name { get; set; } public int? Class { get; set; } } public … Read more
You can set m_obj as an array. Then use a for loop to check bool check(Obj* obj) { for (int i = 0; i < 4; i ++) { if (obj->id == i) continue; if (m_obj[i]->status == true) return true; } return false; } Or add them together, then subtract m_obj[obj->id]->status。Check the result is zero … Read more