[ad_1] Your code does have undefined behaviour. But let’s start at the beginning. Sample s1 = new Sample(10); This is what happens in this line: A Sample object is allocated on the heap and the new expression returns a pointer to it, a Sample*. You cannot assign a Sample* to a variable of type Sample. … Read more
[ad_1] You cannot use: strcpy(Student.StudentGPA, “2.4”); strcpy(Student.StudentCredits, “31”); since Student.StudentGPA and Student.StudentCredits are of type double. Use: Student.StudentGPA = 2.4; Student.StudentCredits = 31; BTW, the line strcpy(Student.StudentMajor, “TECH”); will lead to undefined behavior since Student.StudentMajor doesn’t have enough space to hold those characters and a terminating null character. Make the size of Student.StudentMajor at least … Read more
[ad_1] For any array or pointer a and index i, the expression a[i] is exactly equal to *(a + i). From that we can draw the conclusion that a + i is a pointer which is equal to &a[i]. So when you try to do &(a + 1) that’s really equal to &&a[1] which makes … Read more
[ad_1] The error means there is not a version of the function which takes the type you are passing, but instead there are more than one version taking a type that could be converted to (like float and double). The compiler doesn’t know which you want. There is not an int version of this function, … Read more
[ad_1] I can only assume, that an expected behavior is to get variable v incremented 10 times using pointer. If that’s correct, you have two mistakes: Type of pointer should be the same with the data you’re pointing. If you’re pointing at int variable, you should use int * pointer. In the for loop condition: … Read more
[ad_1] This is an obfuscated, miniature Raytracing program. It is described on site https://mzucker.github.io/2016/08/03/miniray.html I found it by taking part of the mystery string “LJFFF%7544x^H^XXHZZXHZ”, and googling for it. If you run the compiled program and capture the output, you get a raytraced picture in .PPM format: a.out > output.ppm When I tried to run … Read more
[ad_1] If you want to implement the dynamic array management within a class, you need to qualify your method implementations with the class name. dynamicArray.cpp int * dynamicArray::array_constructor(int * &intPtr, int &size ){ if(intPtr != NULL){ // … other member functions the same thing. However, you don’t really use your class in a class-like way … Read more
[ad_1] Steps Get the user – ideally you want to use the userid (or primary key) to retrieve the user Remove the user from the db Save the changes in the context Code: var user = db.Users.Single(x => x.Nom == formUser.Nom && x.prenom == formuser.prenom); db.Users.Remove(user); db.SaveChanges(); [ad_2] solved asp net. How to remove data … Read more
[ad_1] This is the line I’m having a problem with for(int i = a; i <= b; i++) { /* body of the loop */ } See e.g. https://en.cppreference.com/w/cpp/language/for, it translates into something like: Executes int i = a; once, then executes the body of the loop and i++ repeatedly, until the value of condition … Read more
[ad_1] This should work (haven’t tested it though) public static bool _Invoked; Form2 f2 = new Form2(); private void button1_Click(object sender, EventArgs e) { if (!_Invoked) { _Invoked = true; f2.Show(); } else if (_Invoked) { f2.BringToFront(); _Invoked = false; } } Add a comment for further clarification EDIT: Just tested this and its working … Read more
[ad_1] The problem is exactly what the compiler said: the UploadProgressChangedLibArgs type couldn’t be found. That’s another type within the same library – so you need to port that before you can port an event which uses it. As noted in comments, I’d advise you to avoid porting C# to VB or vice versa unless … Read more
[ad_1] while (1) { scanf(“%d”, &n0); if (n0==0) break; … } 1 [ad_2] solved How to solve this code? [closed]
[ad_1] If you need to trigger a function call on assignment, you can wrap the type in a class that overrides the assignment operator; note that you may want to override more than just assignment, this is just an example and not a style guide 🙂 #include <iostream> template<class T> class wrap { private: T … Read more
[ad_1] Depending on how you define and initialize x, it may go into the loop every time you enter a non-integer, or it may only go into the loop sometimes. If you don’t assign any value to x, then the value of x is still undefined after cin >> x if you enter a non-integer, … Read more
[ad_1] the problem is that when i put a new task in the queue the thread does not begin to pop from the queue Because it is terminated. If the thread is terminated when you push items, you must create a new one. Terminated means “done, from the OS point of view”. It will not … Read more