WebApr 12, 2024 · C++ #include #include using namespace std; int main() { // Declare a string variable string greeting = "Hello, world!"; // Print the string cout << greeting << endl; // Get the length of the string int length = greeting.length(); cout << "The length of the string is: " << length << endl; WebIf you mean a C-style array, then you can do something like: int a [7]; std::cout << "Length of array = " << (sizeof (a)/sizeof (*a)) << std::endl; This doesn't work on pointers (i.e. it won't work for either of the following): int *p = new int [7]; std::cout << "Length of array = " << (sizeof (p)/sizeof (*p)) << std::endl; or:

getting size of array from pointer c++ - Stack Overflow

WebBelow are the steps to create an array of pointers in c++, which are as follows; 1. First, we need to create an array that contains some elements. Let’s say 10 elements for now. Example: int myarray [2] = {100, 200}; 2. After this, we have to create an array of pointers that will store the address of the array elements. Example: int * myptr [2]; 3. black and decker brew and go parts

c - size of array of pointers - Stack Overflow

WebMay 24, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. Webfor C++, instead of passing a raw array pointer, you might want to have the parameter use something that wraps the array in a class template that keeps track of the array size and provides methods to copy data into the array in a safe manner. Something like STLSoft's array_proxy template or Boost's boost::array might help. WebSep 18, 2024 · Getting sizeof pointer to an array. I am playing around with pointer to array. Saw this tutorial's code as below. I understand that sizeof (int) returns the number … black and decker brew and go mug