[Solved] How to fix ‘constructor is invalid use’ in C++?

Student is not a function that can be called on a Student* pointer. To construct an object call new Student. stu[i] = new Student(Name, id, age, cpp_score, cpp_count); Or even better: don’t use raw pointers, use a std::vector<Student>. Compare the CppCoreGuidelines for that. solved How to fix ‘constructor is invalid use’ in C++?

[Solved] Functions not running when called? [closed]

1- You should close the script tags. 2- You don’t need to open separate script tags for sequential scripts. 3- You have to change the scope of the urlArray to global. You can do it by adding a var before the definition and outside of the function. <script type=”text/javascript”> var urlArray = []; function AddSeries() … Read more

[Solved] How to Remove number from Extension with string?

You can use regex as shown or a simple LINQ query, i’d also recommend System.IO.Path: string originalPath = “Url1234.pdf”; string dir = Path.GetDirectoryName(originalPath); // in this case “” string extension = Path.GetExtension(originalPath); // .pdf string fn = Path.GetFileNameWithoutExtension(originalPath); // Url1234 string newFn = String.Concat(fn.Where(c => !Char.IsDigit(c))); // Url string newPath = Path.Combine(dir, newFn + extension); … Read more

[Solved] How does operator precedence affect order of evaluation?

Thus in a C++ program that is made up of value computations exclusively the evaluation order would entirely be dictated by operator precedence and associtivity. (2) No, the evaluation order of value computations is not entirely dictated by operator precedence and associativity. They impose only a partial ordering on evaluation. Consider a + b. In … Read more

[Solved] Printing pattern with only one inner loop [closed]

Inner loop ? Why would you need such a thing ? You can do it with a single for loop using std::string::string void print_stuff(unsigned width){ for(auto i = 0u ; i < width ; i+=1){ auto starAmount = width – i; auto spaceAmount = i; std::cout << std::string{spaceAmount, ‘ ‘} << std::string{starAmount, ‘*’} << ‘\n’; … Read more

[Solved] Calculating partial months salary costings for employees on a project in Excel [closed]

In cell I2, put the following formula (see UPDATE section for a simplified version): =LET(setPrj, A2:E12, setRoster, A15:F33, SOMs, I1:T1, namesPrj, INDEX(setPrj,,1), startsPrj, INDEX(setPrj,,4), endsPrj, INDEX(setPrj,,5),names, INDEX(setRoster,,1),starts, INDEX(setRoster,,2), ends, INDEX(setRoster,,3), salaries,INDEX(setRoster,,6), empty, “,,”, SPLIT, LAMBDA(x,case, LET(y, TEXTSPLIT(TEXTJOIN(“;”,,x),”,”,”;”), z, FILTER(y, INDEX(y,,1)<>””, NA()), IFS(case=0, z,case=1, HSTACK(INDEX(z,,1), 1*CHOOSECOLS(z,2,3)), case=2, 1*z))), BYCOL(SOMs, LAMBDA(SOM, LET(EOM, EOMONTH(SOM,0),endsAdj, IF(ends > 0, ends, … Read more

[Solved] C++ Accessing Another Class Member [closed]

Simply add a getter method int get_x() to Class1 #include <iostream> #include <conio.h> using namespace std; class Class1{ private: int x; public: Class1(); void Display(); int get_x(); }; int Class1::get_x() { return x; } class Class2{ private: double z; public: Class2(); void Display(); Class2 Add(Class1); }; Class1::Class1(){ x = 1; } Class2::Class2(){ z = 5; … Read more

[Solved] Automatically check textbox length c# [closed]

You are looking for the TextChanged event. Write the method: protected void textBox1_TextChanged(object sender, EventArgs e) { if(textBox1.Text.Length >= 8) { // do things } } Then add it as a listener: textBox1.TextChanged += this.TextBox1_TextChanged; (If you’re using the Visual Studio designer you can select the TextBox, go to the Properties window, click the Events … Read more