Put in your code somewhere: printf (“size is %d\n”, sizeof (putbuf)); If it’s a pointer, you’ll probably get four or eight since that’ll be the size of a pointer on your system (four or eight will be common ones at the moment but it all depends on the size of your pointers). Remember that arrays … Read more
Whatever is in Main() is executed first, that’s usually always the entry point for .NET Console/Windows Applications. solved Which code is read first when I start my program?
There’s the rand() function from <cstdlib> library, which returns a number between 0 and RAND_MAX. If you want a number between 0 and 1, you have to do a workaround with casts and divisions: double X = ((double)rand() / (double)RAND_MAX); This is a practical example, putting the previous code inside a function: #include <cstdlib> // … Read more
use a base class instead of an interface: abstract class MyBaseClass { public Dictionary<int,string> dic { get; set; } public MyBaseClass() { dic = new Dictionary<int, string>(5); } public void Add(int key, string value) { dic.Add(key, value); } } public class MyClass1 : MyBaseClass { public MyClass1():base() { } } public class MyClass2 : MyBaseClass … Read more
This is the same thing I talked about recently here: D lang – Using read and readln() in the same program although in C instead of D so the solution is slightly different but same explanation. The scanf stops on whitespace, which is a newline… which gets sees as the end of input and thus … Read more
1 – All the entities (variables, types, constants, and functions) of the standard C++ library are declared within the std namespace. using namespace std; introduces direct visibility of all the names of the std namespace into the code. ref: http://www.cplusplus.com/doc/tutorial/namespaces/ 2 – Namespaces in C++ are most often used to avoid naming collisions. Although namespaces … Read more
The conditions like the following are wrong: (board[0] == ‘X’ || ‘O’) Because of C++ operator precedence and evaluation rules, the compiler understands it as: (board[0] == ‘X’) || (‘O’ != 0) The second part is, of course, always true, so it always succeeds for every field and therefore for the whole board. You would … Read more
Remove the “;” after the #include Add the #include <cstdlib> to get system and exit The following compiled for me: #include <iostream> #include <cstdlib> int main() { using namespace std; int i=1; char ch; cout<<“please enter a choice”<<endl; cin>>ch; switch(ch){ case ‘e’: case ‘E’:i=2;break; case ‘o’: case ‘O’:break; default: cout<<“Wrong input.”<<endl; system (“pause”); exit(1); } … Read more
Convert the list to a decimal list, and use something like the following : var list = new List<decimal> { 2512793, 119176, 83599, 45613, 43352 }; decimal sum = list.Sum(); var perc = list.Select(x => (x / sum) * 100); Alternatively, you can cast each value as decimal. Or Alternatively as @James Pointed out there … Read more
First you can to get Visual studio 2012 or 2013 for windows not windows desktop and second you need to get windows phone sdk. That should be it , you’te good to go. If you want to create directx apps you will probably need directx sdk also. solved Program to create a Windows Phone app … Read more
Since you’re using C++, why not use stringstream to build your buffer in pieces: #include <cstdio> #include <sstream> #include <string> using namespace std; int main() { string s1 = “s1”; string s2 = “s2”; string s3 = “s3”; int x = 0; stringstream ss; ss << s1 << “,” << s2 << “,” << s3; … Read more
You DO know on which form b1 is by casting the sender… void b1_click(object sender, EventArgs e) { if (sender is Button) { var b1 = (Button) sender; b1.Parent.Controls.RemoveByKey(b1.Name); No1(b1.TopLevelControl, b1.Location.X, b1.Location.Y); } } The property TopLevelControl gives you the Form and Parent gives you the ControlContainer (can be the Form but also a Panel) … Read more
This isn’t the best solution but it works on your string. Regex: \s[0-9]*\) It checks 12) 45) But not as45) fd21) solved Regular Expression needed [closed]
Your issue is that you are confusing the compiler: spi_start(); initialize(); Are function calls and not function declarations. Please include the return types: void spi_start(); void initialise(); 2 solved Compilation error: expected constructor, destructor, or type conversion before ‘;’ token [closed]
By the time p3 equals 10, it will never re-enter the while (p3 < 10) loop (because once you’ve incremented it to 10, it will never be less than 10 and will never re-enter that loop). So yes, p and p2 do increment, but they never get printed because p3 == 10 at that point … Read more