You have 2 ways of having a function change data outside it: you can pass a variable by reference and update it, or you can return a value and use that. You are mixing half of each method instead. I reordered the code to make my commentary clearer. #include <stdio.h> int value(int *a); // here … Read more
Characters are encoded as integers, usually 8-bit by default in C. Some are defined by ASCII and others depend on your OS, screen font, etc. The * character has code 42. If you enter 55, your code computes 42*55=2310 and uses the low 8 bits of this value, which is 6, as the character to … Read more
This is not legal C++ code. The statement a++ = b; is not legal. Intuitively, you can only place something on the left-hand side of an assignment expression if it represents an object, not a value. For example, we can’t write x + y = z; because x + y is a value, not an … Read more
So why we need to declared the type like : int check(int a) { … } From this it is clear you’re referring to the function and not to the variable itself. That part of the code is defining a function. So, let’s separate the two things in your code: int (a); Declares variable a. … Read more
Use BigInteger. int or even unsigned long is way too small to hold the product. And calculating integer values with double is also problematic. BigInteger has a static method ModPow made exactly for your purpose: int N = 10379 int S1 = 3701; int d = 37; BigInteger T1 = BigInteger.ModPow(S1, d, N); // 7770 … Read more
You have not written a copy constructor or a copy assignment operator. The Rule of 3 tells us that anytime a destructor has been written, the copy assignment operator and copy constructor should be as well. You haven’t written either so let’s look at what happens: l3 = l1 in this line the implicitly defined … Read more
Shooting from the hip (basics only): Define class Coord { public double X; public double Y; Coord(double x, double y) { X = x; Y = y; } } class Line { public Coord P1; public Coord P2; Line(Coord p1, Coord p2) { P1 = p1; P2 = p2; } } Then you can use … Read more
It looks like you need http://www.seleniumhq.org/ – it can download source of the page and you can programmatically click on links and perform other interactions with the page Also you can download web pages with Apache HTTP Client library – http://hc.apache.org/httpcomponents-client-ga/index.html 0 solved How can I auto import html from web site? [closed]
Its still not entirely clear what behavior you want, but it seems you don’t understand what else does. An else (or else if) statement will only execute if the if/else if statements above it do not. With your code, this means that you will only ever execute the “A” block or the “B” block, never … Read more
Alright, I have fixed your code a bit. It should compile now, assuming you have actually declared the variables you are using. I can’t do that for you. Please read the comments. You seem to need a lot of practice with C# syntax and the language in general, you had a lot of invalid C# … Read more
try this int main () { cout << “Tiene los atributos siguientes: \n”; cout << “Puntos de Vida (PV)… \t” << luch_bas[0]<< “\n”; … } 1 solved How do I print an individual value from an array within text?
double position_array = first_cells(); This tries to invoke first_cells (a vector) as a callable (but it doesn’t implement operator(): https://en.cppreference.com/w/cpp/container/vector). Assuming that the loop variable is there for a reason, why not use it: double position_array = first_cells[i]; Note also this does a possibly unwanted conversion of float to double if you want bounds-checking, use … Read more
NULL as a pointer valid address? Maybe: NULL is a macro which expands to a null pointer constant. It may have a value like int 0. In that case, it is not a pointer but a int. It may have a value like ((void*)0) which is a pointer. When a null pointer constant is converted … Read more
You have a deadlock. The StartTask waits on task.Wait() to complete but this occurs (is called on) on the calling thread which is the main UI thread. The Task being waited eventually reaches UpdateStatus which calls an Invoke on the UI thread as well but this thread is currently waiting on task.Wait() (so it is … Read more
How about defining some static members in your class that return values of interest? class Date { // … public static Date last() { return Date(9999,99,99); } // … } 0 solved C++ Object Date but called with only int?