Because the expression num1++ evaluates to num1. You may want to do: ++num1 which evaluates to num1 + 1. Note however that both expressions increment num1 by one. Evaluating num1 in the next statement evalutes to the incremented value. In short In C, why doesn’t num1++ increment in the printf()? num1++ does increment num1 but … Read more
Modify your function and use it like in example below. using System; public class Program { public static double Decode(string a) { return double.Parse(a); } public static void Main() { var decoded = Decode(“2.1”); Console.WriteLine(decoded); } } OUTPUT: 2.1 If you want improve this function read about Double.TryParse. solved Error CS0030: Cannot convert type ‘void’ … Read more
In C++, to make a custom object, you use classes, structs, and unions (although unions are a more advance topic). A class is a user-defined type, where the default access modifier is private. A struct is a class, but where the default access modifier is public. A union is a more advanced topic, you may … Read more
Introduction This question is about a C++ code that is unable to display a bitmap. The code is from a textbook and is not working as expected. In this introduction, we will discuss the possible reasons why the code is not displaying the bitmap correctly. We will also discuss some possible solutions to the problem. … Read more
Running your code, put aside the code logic first, just to show the BMP image, you did not add the correct image path. You can try to add the absolute path of the picture. Like this: DrawBitmap(“C:\\Users\\strives\\source\\C.bmp”,x,y); //This is my picture path. Please enter your picture path correctly. Updated: I retested the code with MinGW, … Read more
Try this: private bool ContainsOnlyOneLetter(string String) { if(String.Length == 0) { return true; } for(int i = 0; i < String.Length;i++) { if(String.Substring(i,1) != String.Substring(0,1)) { return false; } } return true; } And you can use the function like this: bool containsOneLetter = ContainsOnlyOneLetter(“…”); if (containsOneLetter == true) { //Put code here when the … Read more
The initializer of a static variable must be known at compilation time. That’s why the declaration of bin is rejected. Instead you need to declare bin as a pointer to an integer and allocate memory dynamically, that is at run-time: int *bin = malloc(size * sizeof *bin); As pointed out by rioV8, you should also … Read more
Something like this should do the trick: let getEnumDescription value = let fi = value.GetType().GetField(value.ToString()) let attributes = fi.GetCustomAttributes(typedefof<DescriptionAttribute>, false) |> Array.map (fun x -> x :?> DescriptionAttribute) if attributes.Length > 0 then attributes.[0].Description else value.ToString() Then you can call it like so: let red = Color.Red |> getEnumDescription let blue = Color.Blue |> getEnumDescription … Read more
int FeetToInches(int feet) is a method accepting the paramter feet of type int and defines a return type of int. return; can only be used in a method without a return type, return inches; returns the variable inches About the difference in your code sample, they differ in a lot of ways, and the only … Read more
As others have pointed out, you can only have one return statement from a function and thus only return on parameter (although it can be a structure). In this instance I would pass the integer values into the function by using integer pointers and passing their address e.g.: int swapNum(int *num1, int *num2); int main() … Read more
With (val>>1)-(val & 1) you get your first result: 0 -> 0 1 -> -1 2 -> 1 The alternative result can be got with (val & 1)-(val>>1): 0 -> 0 1 -> 1 2 -> -1 0 solved Formula for Mapping three values [closed]
You want something like this: public static Pair FindClosest(IEnumerable<Pair> list, int value) { Pair closest = null; if (list != null && list.Count() > 0) { foreach (var pair in list) { if (value <= pair.Max) { closest = pair; break; } } if (closest == null) { closest = list.Last(); } } return closest; … Read more
The purpose of a hash function ist to retrieve a unique value for a given sequence (of bytes, characters, …). Therefore you need the length of the sequence, here with ‘strlen’. Without bit shift operator (<<) you would get the same result for the sequence ‘abc’ and ‘cba’. The xor operator (^) ‘scrambles”https://stackoverflow.com/”hashes’ the current … Read more
What is difference between using a colon (:) when creating a class to use inheritance and the ‘using’ keyword at the top of the program code? solved What is difference between using a colon (:) when creating a class to use inheritance and the ‘using’ keyword at the top of the program code?
char a[50][50] declares a as a 50-element array of 50-element arrays of char. That means each a[i] is a 50-element array of char. It will be laid out in memory like: +—+ a: | | a[0][0] +—+ | | a[0][1] +—+ | | a[0][2] +—+ … +—+ | | a[0][49] +—+ | | a[1][0] +—+ … Read more