There is a problem in this line: double v[k] = log(log(sqrt(e[k]+1)+1)+1); in the first iteration k == 0 so you are trying to declare a zero sized array. I dont understand the code enough to tell you how to fix it, but a zero sized array is definitely not what you want in that place. … Read more
I think what you’re trying to do is this: float cal_area(triangle aTriangle) { float Area; Area = (aTriangle.vertices[1].x – aTriangle.vertices[0].x) * (aTriangle.vertices[2].y – aTriangle.vertices[1].y) – (aTriangle.vertices[1].y – aTriangle.vertices[0].y) * (aTriangle.vertices[2].x – aTriangle.vertices[1].x); if (Area < 0.0f) { return -Area / 2.0f; } else { return Area / 2.0f; } } solved Structured Data: Nesting Triangles … Read more
All seems well until line 82: st->readdata(); where the variable st is not initialised but used. 1 solved cross initialization error in while loop (c++ program)
Try this code : int main() { if(printf(“%c”,59)) //59 is ascii value of semicolon {} } 0 solved How to print a semicolon (;) without using a semicolon in the program? [closed]
There are many options, I describe some of them for you use Dictionary<int, string>Pros: very fast lookupCons: you can not have two string with same number, you don’t have a List var list2d = new Dictionary<int, string>(); list2d[1] = “hello”; list2d[2] = “world!”; foreach (var item in list2d) { Console.WriteLine(string.Format(“{0}: {1}”, item.Key, item.Value); } use … Read more
I found easy solution. You could just write it instead of complain that there is no code in the question. string expression;//my calculator expression string[] operators;//array that contains both unary and binary operators. for(int i=0;i<operators.length;i++) { expression = expression.replace(operators[i],” “+operators[i]+ ” “); } string[] Values= expression.split(” “); solved Split calculator expression with binary and unary … Read more
getPosition is non-const in the interface class, but const in your derived class. These are two different functions and cause your problem. Adding the override keyword in the implementation class (if your compiler supports it) will flag this sort of problem. 0 solved C++ cannot instantiate abstract class
You’re accessing outside the vector. When you get to the last iteration of the for loop in bubbleSort(), numbers[i] is the last element of the vector, and numbers[i+1] is outside. This results in undefined behavior, and in your case it happens to access the -1 that you initially put in the vector and then popped … Read more
I’ll go over your points one by one: Declare long presult; right before the try statement. This makes the compiler mad because it wrongly thinks there’s a possibility of returning an unintialized variable. Actually, the compiler correctly determines that there is the possibility of returning an uninitialized variable. Since the variable is only set if … Read more
C++ error: Reference to non-static member function must be called, Please help, don’t know whats literally wrong [closed] solved C++ error: Reference to non-static member function must be called, Please help, don’t know whats literally wrong [closed]
I’m not sure if I understand the question, but I would say yes, they are optional. You could write all of your (custom) functions, classes, etc. in one file if you wanted. solved In C++, are custom header files optional? [closed]
Use WinApi function AssocQueryString [DllImport(“Shlwapi.dll”, CharSet = CharSet.Unicode)] public static extern uint AssocQueryString(AssocF flags, AssocStr str, string pszAssoc, string pszExtra, [Out]StringBuilder pszOut, ref uint pcchOut); Create enumerations AssocF and AssocStr. public enum AssocStr { ASSOCSTR_COMMAND = 1, ASSOCSTR_EXECUTABLE, ASSOCSTR_FRIENDLYDOCNAME, ASSOCSTR_FRIENDLYAPPNAME, ASSOCSTR_NOOPEN, ASSOCSTR_SHELLNEWVALUE, ASSOCSTR_DDECOMMAND, ASSOCSTR_DDEIFEXEC, ASSOCSTR_DDEAPPLICATION, ASSOCSTR_DDETOPIC, ASSOCSTR_INFOTIP, ASSOCSTR_QUICKTIP, ASSOCSTR_TILEINFO, ASSOCSTR_CONTENTTYPE, ASSOCSTR_DEFAULTICON, ASSOCSTR_SHELLEXTENSION, ASSOCSTR_DROPTARGET, ASSOCSTR_DELEGATEEXECUTE, ASSOCSTR_SUPPORTED_URI_PROTOCOLS, … Read more
You can do this by building a set of integers and adding larger seen in the set, and holding the minimum not seen in as a counter. Once there is a number that is equal to the latter, go through the set removing elements until there is a missing integer. Please see below for implementation. … Read more
The * operator declares s as a pointer. This means that it will contain the address of the variable assigned. Here the value of the pointer s is i i.e, the first element of the string “iLoveC”. When you use post increment s[j++] it is equivalent to s[0]=’i’ but when you use s[++j] it is … Read more
im quite confused what you are doing oO Is that what you are searching for? std::unorderd_map<std::string, std::list<std::string>> hash_map; // fill map …. // go to hash std::string hash = “whatever”; std::unorderd_map<std::string, std::list<std::string>>::iterator itr; itr = hash_map.find(hash); // check if value exists if(itr == hash_map.end()) std::cout << “not in map … ” << std::endl; else { … Read more