The following declaration within a definition of your class is not enough: private: static map_type * map; In one .cpp file, you must also add: map_type* BaseFactory::map = NULL; This article might help you too: Static data members (C++ only) + this question, which has almost 100k views by now: Initializing private static members 2 … Read more
p has to be initialized to 1 as 0 * X == 0 Also i and j (why not k) have to be initialized to 1 as it is required by your formula You have to sum up the products after the products where calculated as you would add 1 to the correct result otherwise … Read more
Do you mean something like this: var song = “foo2.mp3”; var number = 2; var query = from x in xd.Root.Elements(“file”) where x.Element(“song”).Value == song from y in x.Elements(“listen”) where (int)y.Element(“number”) == number select y.Element(“data”); Which would give you: solved c# linq to xml subnodes query [closed]
Even though 5 persons down voted my question, I found my on way to solve the problem. Here is the code which I used. It is written in Python. enter codefrom numpy import * from math import * import operator f = open(‘Data_Genergy_26.txt’, ‘r’) lines = f.readlines() # initialize some variable to be lists: r … Read more
Your question is not so clear. But if you meaning to commandline you can build with MSBuild, DEVENV and NMake (link) you also can build with csc.exe (link) solved Create .exe manually in Visual Studio 2012 [closed]
You get zero orders because List<OrderInfo> orders = CommerceLibAccess.GetOrdersByRecent(recordCount); is returning an empty list. It is returning an empty list because: return ConvertDataTableToOrders (GenericDataAccess.ExecuteSelectCommand (comm)); is returning an empty data-table. You’ll have to dig into your data table to figure out why it thinks its empty. (maybe because it is actually empty??) 2 solved Function … Read more
%d actually is used for printing int. Historically the d stood for “decimal”, to contrast with o for octal and x for hexadecimal. For printing double you should use %e, %f or %g. Using the wrong format specifier causes undefined behaviour which means anything may happen, including unexpected results. 5 solved a is a double, … Read more
If you are trying to delete characters from an existing file, you should use fseek. printing ‘\b’ won’t help. 3 solved fprintf outputs 0x08 when printing backspace [closed]
There is a solution with a time complexity of O(T): Use the formula for sum of integers 1+2+3+…+n = n*(n+1)/2. Also note that 3+6+9+…+(3*n) = 3*(1+2+3+…+n) = 3*n*(n+1)/2. Figure out how many numbers divisible by 3 there are. Calculate their sum. Figure out how many numbers divisible by 5 there are. Calculate their sum. Figure … Read more
If there’s really a business reason to cater for the situation where your variable is null, then you the developer should provide an else block. Concerning literature, yes there is actually a performance cost to throwing exceptions, so it’s recommended you avoid your app throwing exceptions as much as possible. You can read more about … Read more
It’s called Circular Dependency. If you google it, you’ll find many articles and resources about it, one of them. To sum up what they are offering, one thing you can do is to use Interfaces, and program against interface, but not concrete class. Another option is to have third project with core functionality, and just … Read more
Change your code to if(ch==’d’) { printf(“\n\n\tEnter a number “); scanf(“%f”, &num2); if(num2==0) { printf(“\n\n\tZero divisor”); printf(“\n\tHit a key to end the program”); getch(); system(“cls”); exit(0); } else if(num2!=0) { printf(“\n\n\tEnter another number “); scanf(“%f”, &num3); printf(“\n\n\tPlease divide the two numbers “); scanf(“%f”, &result1); } } 2 solved if statement not working properly? [closed]
This is perhaps not the best question to ask on SO as it’s bound to get opinions rather than answers, with this in mind, I will give you my opinionated answer. As your first real life application, it’s probably best you go with something you’re somewhat familiar with, either that or find a solution with … Read more
The statement return(“Option %c is not supported”,’k’); is the same as return(‘k’); since the expression “Option %c is not supported” has no side effect. Given that the return type of the function is FILE*, return(‘k’); is a problem since ‘k’ is not of type FILE*. It seems you are not sure what you are doing. … Read more
you can do the following: explanation for the code: Square is formed of 2 equal sides, so in order to draw the square using *, you will think of it like a matrix you need a loop to draw the rows and another loop to draw the columns, and both loop has upper limit which … Read more