global

In the listing below, an attempt to declare the rectangle "r" before the main() function is called results in an error. error: 'r' does not name a type r.x = 150;<br> Why must "r" be declared after main()? #include <SDL2/SDL.h> int main (int argc, char** argv) { // Creat a rect at pos ( 50, 50 ) that's 50 pixels wide and 50 pixels high. SDL_Rect r; r.x = 150; r.y = 150; r.w = 200; r.h = 100; SDL_Window* window = NULL; window = SDL_CreateWindow ("SDL2 rectangle", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_SHOWN ); // Setup renderer SDL_Renderer* renderer = NULL;

var selection = document.getElementById('selection'); var closed = true; function openorclosebar() { if(closed == false){ selection.style.webkitAnimation='bounceOutDown 1s forwards'; selection.style.animation='bounceOutDown 1s forwards'; closed = false; } else{ selection.style.webkitAnimation='bounceInUp 1s forwards'; selection.style.animation='bounceInUp 1s forwards'; closed = true; }; } How can I get global variables "selection" and "closed" to use them. I tried "window.selection" and "window.closed", but nothing helps. If you have an idea, help me please, it's so important project. Bergi

I made a program that gets info in textbox1 and textbox2 after pressing button1. If you type in textbox3 and if what you wrote there is same as textbox1 ,After pressing button2 it puts textbox2's text in the label2.text. But the problem is that it won't put the textbox2.text into label2.text. Why? Here's the code: public partial class Form1 : Form { public Form1() { InitializeComponent(); } ozv[] a = new ozv[5]; int i = 0; private void button1_Click(object sender, EventArgs e) { a[i] = new ozv(); a[i].name = textBox1.Text; a[i].id = int.Parse(textBox2.Text); i++; } private void button2_Click

I have an array of array with negative index. It is an array which has real dimensions [dim_y + 40][dim_x + 40] but the user uses the array like it has dimensions [dim_y][dim_x]. First i had global and already defined the dimensions dim_x, dim_y, so i had this int map_boundaries[dim_y + 40][dim_x + 40]; int (*map)[dim_x+40] = (int(*)[dim_x+40])&map_boundaries[20][20]; It worked fine. Now i need the dimensions dim_y and dim_x to be variable, and with this i mean that i want the array 'map' to not have fixed size but dynamic, i need to read the dim_y, dim_x from a user and the array 'map' to be

I have a class with a dictionary. I create n number instances of the class. When I += values on a key in that dictionary it is reflected in every single object I have instantiated from that object. How do I make that dictionary unique to every instantiation of that class? Here is how I create the Object: for num in range(0, numOfPlayers): listOfPlayerFleets.append(fleet.Fleet()) Here is how call the addShip Method. I have this in a for loop and have verified that the currentPlayer int is incrementing each time. listOfPlayerFleets[currentPlayer].addShip(typeOfShip, num) Here is the code in my

var pload = function(ctrl, func){ var dataa; $.post("/index.php/"+ctrl+"/"+func,{}, function(data){ dataa = data; }); return dataa; }; var bind = function(hashtag, ctrl, func, div){ $(document).on("click", "a[href="+hashtag+"]", function() { var body = pload(ctrl, func); alert(body); $(div).html(body); }) } How I can get data in global? I want, so pload return data from post request. But I get " undefined " in alert() Try using callback. function pload(ctrl, func,callback){ $.post("/index.php/"+ctrl+"/"+func,{}, function(data){ callback(data); }); }; var bind = function(hashtag, ctrl, func,