I agree with the other commentors- what’s really missing here is an understanding of what the static keyword means and what it means to instantiate objects. The specific issue here is that your Program class’s fields requires an instance before they can be accessed (Program and it’s fields are not static) while your Main method … Read more
You just have to cast to MessageHandler: InstanceType = (MessageHandler)System.Attribute.GetCustomAttribute(Method, typeof(MessageHandler), false); The clue is in this part of the error message: An explicit conversion exists (is a cast missing?) 0 solved Convert VB to C# ‘GetCustomAttribute’
The result of Math.Sqrt will never be negative: the result will will be >= 0, NaN, or +Inf. Check the actual value of Disc after the evaluation. solved Using C# language, if(NegativeValue < 0) returns 'false' rather 'true' [closed]
The sprintf command has the following declaration: sprintf(char *str, const char *format, …); your declaration in question is: sprintf(buffer+(p-str), “%s%s”, rep, p+strlen(orig)); The sprintf command writes to the character pointer str, the values rep and p+strlen(orig) in accordance with the format string “%s%s”. Essentially, it is simply combining (or concatenating) rep and p+strlen(orig) in buffer+(p-str). … Read more
First things first, cin << AmerAge; should be: cin >> AmerAge; I remember this with the memory aid: you input data to the variable, cin >> var, you output it from it, cout << var. Secondly, conio is not a C++ header, it’s not even a C header. It’s a blast from the past from … Read more
Function inc does not change the original values of array a. It accepts arguments by values that is it deals with copies of the arguments. If you want that the function would change the arguments it should be defined like void inc (int &x,int &y ){ x++; y++; } In this case for a function … Read more
in c# void Update(){ if (Input.GetKeyDown(KeyCode.Escape)) Application.Quit(); } or in .js function Update(){ if (Input.GetKeyDown(KeyCode.Escape)) Application.Quit(); } This is the function for exit app when back button pressed, if you want to exit the app when back button pressed twice, implement the logic in the java code you have posted in question into equivalent code … Read more
At the beginning,f( )is declared as returning a reference to a double, and the global variable val is initialized to 100. Next, the following statement displays the original value of val: cout << f() << ‘\n’; // display val’s value When f( ) is called, it returns a reference to val. Because f( ) is … Read more
1st conditions while(i++>5); here i =1, it fails but increments it to 2. 2nd condition while(i++>4); again fails but increments i to 3 3rd conditions while(i++>3); again fails but increments i to 4 So, you end up with a 4 solved How can I understand the while, do…while and increment operators in following program? [closed]
Your understanding is correct: 8.3.4 Arrays In a declaration T D where D has the form D1 [constant-expression opt ] and the type of the identifier in the declaration T D1 is “derived-declarator-type-list T,” then the type of the identifier of D is an array type. T is called the array element type; this type … Read more
Maybe you need to learn File I/O with C++. Basically you include <fstream> and create instances of fstream (for I/O), ifstream (for input only) or ofstream (for output only). Then you open a file and use the object as you usually do with cin/cout. Here‘s a Google search. The first page contains a lot of … Read more
To restore path: Store additional n-sized array, say, prev[n], prev[0]=-1. If your dp decides for i’th step that you came from i-1, (i.e. dp[i – 1] + abs(v[i] – v[i – 1]) was larger than dp[i – 2] + 3 * abs(v[i] – v[i – 2])), then prev[i]=i – 1, otherwise prev[i]=i – 2. Then … Read more
Here is my simplest C++ implementation for heap. The code is well-commented. /* Usage: heap Heap; Heap.clear(); Heap.insert(value); Heap.remove(); Heap.print(); */ struct heap { int myarray[NN+1]; // myarray to store the numbers as heap, 1 indexed int n; // the number of nodes in my array heap() { // constructor clear(); // we clear the … Read more
You could use regular expressions, e.g: class Program { static void Main(string[] args) { var input = ” SUCCESS Post Policy Success INVOICE No. :: WS1704003404 || Policy No :: 59203313 || App No. :: 123456724 “; var pattern = @”::\s*(\w+)\s*”; var matches = Regex.Matches(input, pattern); foreach (Match match in matches) Console.WriteLine(match.Groups[1].Value); } } 1 … Read more
You have marked this as C++ (4-1i) should be shown as (4-i) You might find std::stringstream helpful. It simplifies the special handling for the imaginary part: virtual int foo() { std::cout << std::endl; show(4, -2); show(5, -1); return(0); } void show(int real, int imaginary) { std::stringstream ss; // default is blank if (-1 == imaginary) … Read more