Why do you need a new form class for each country? The idea of a class is that it holds common behaviours. A form is a class. just instantiate an instance of the class with the data that it needs to display. Create a data class to encapsulate the data that the form shows (like … Read more
You are trying to access the i member of an uninitialized pointer. You need to allocate memory for b: b = new a(); b->i = 1; a* c= new a(*b); cout << c->i; delete b; delete c; Live Demo solved runtime error for c++ code (based on pointers) [closed]
When you run a web application, the current working directory of the process isn’t the directory containing your source code. You might want to look at HttpServerUtility.MapPath or HostingEnvironment.MapPath. Note that this doesn’t really have anything to do with StreamReader – for diagnostic purposes, you’d be better off with something like: FileInfo file = new … Read more
char is a that, on most systems, takes 1 byte (8 bits). Your implementation seems to have char represent a signed type, however on other implementations it could be unsigned. The maximum value for a signed type is 2^(n-1)-1, where n is the number of bits. So the maximum value of char is 2^(8-1)-1=2^7-1=128-1=127. The … Read more
You can do: Group by each item Order by descending based on group count select unique item based on group key Like: List<int> list = new List<int> { 1, 2, 3, 2, 1, 6, 2 }; var query = list.GroupBy(item => item) .OrderByDescending(grp => grp.Count()) .Select(grp => grp.Key); foreach (var item in query) { Console.WriteLine(item); … Read more
In this declaration: vector<int>::iterator rit_i,rit_j,initial = vec.end(); only initial is initialized with vec.end(). To make it do what I think you expect, you have to write vector<int>::iterator rit_i = vec.end(), rit_j = vec.end(), initial = vec.end(); or vector<int>::iterator rit_i,rit_j,initial; rit_i = rit_j = initial = vec.end(); or something to that effect. solved segmentation fault for … Read more
i assume you have a class that contains your staff your vector would look like vector<Staff> staff; // Staff would be replaced with your class name then you can create a loop to populate your vector for (int i=0;i<n;i++) // where n is the number of staff { staff.push_back(worker) // push back what ever function … Read more
Replaces the “#” symbol with the corresponding digit if one is present; otherwise, no digit appears in the result string. Note that no digit appears in the result string if the corresponding digit in the input string is a non-significant 0. For example, 0003 (“####”) -> 3. Source So in your case you have a … Read more
The problem is that Activator.CreateInstance does not return ExpandObject (dynamic). You should run test() by reflection, like this : foreach (Type type in DLL.GetExportedTypes()) { dynamic c = Activator.CreateInstance(type); MethodInfo methodInfo = type.GetMethod(“test”); methodInfo.Invoke(c , null); } 2 solved Trying to show a Windows Form using a DLL that is imported at the runtime in … Read more
You want to create an array with a size of zero which is not allowed. You also can´t declare an array with a variable size so you have to use malloc or something else. #include <stdio.h> #include <stdlib.h> int main() { printf(“HOW MANY NUMBERS DO YOU WANT TO INPUT\n”); int array_size; scanf(“%d”, &array_size); int* Array … Read more
Use rfind to get the location of the last slash then substr to return the right side of the string. Since substr‘s second argument defaults to “the end of the string” you only need to provide the beginning position: #include <string> std::string GetURLFilePath(const std::string& url) { auto last_slash_location = url.rfind(“https://stackoverflow.com/”); if(last_slash_location == std::string::npos || last_slash_location … Read more
From your comments on the other answer, it looks like you’re trying to do something like var myWantedIds = new List<int> { 1, 2, 3 }; var matchingItems = myEntityFrameworkItems .Where(efItem => myWantedIds.Contains(efItem.NullableIdProperty)); Writing an overload of Contains won’t help here, as it can’t be translated into SQL. One thing to try is to check … Read more
Looking at the error messages is sufficient to debug the code and make it work. It’s very basic error messages that can be resolved just by reading the code once. 1) extern.c:14:7:conflicting types for ‘array’ char *array[5][0]; ^~~~~ extern.c:6:6: note: previous declaration of ‘array’ was here char array[5][10]; Error: There is declaration of same variable … Read more
Can you try something like following? I haven’t tested the following but it should work on most part. // Elvis’s hip and happening ABC-printing code #include <stdio.h> #include <string.h> #define NUM_ABC_LET 26 void makeABC(char abc[NUM_ABC_LET]); int main() { char abcString[NUM_ABC_LET + 1]; makeABC(abcString); puts(abcString); return 0; } void makeABC(char abc[NUM_ABC_LET + 1]) { char letter; … Read more
I will not do your HW, but I will give a hint. When playing around with OpenMp for loops, you should be alert about the scope of the variables. For example: #pragma omp parallel for for(int x=0; x < width; x++) { for(int y=0; y < height; y++) { finalImage[x][y] = RenderPixel(x,y, &sceneData); } } … Read more