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In C++, we know that given a class pointer, we use the (->) arrow operator to access the members of that class, as seen here: #include <iostream> using namespace std; class myclass{ ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 442 views

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What is a stream in C++?

I've been hearing a lot about streams, ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 234 views

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How to Access Subgraphs of an Existing Graph in Boost

I read a graph using read graphviz() ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 392 views

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Is there a maxheap in the C++ standard library?

I understand that the std::priority queue class ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 420 views

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I need to print the following string: std::string("-I\"/path/to/dir\" "); Basically, I need to accomplish this since I am generating C++ code using C++ code. I want to use an ofstream to write the above string, so something like ofstream fout; fout << the_string ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 368 views

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Efficient way to return a std::vector in c++

When delivering a std::vector in a function, how much data is duplicated, and how much of an optimization will it be to place the std::vector in free-store (on the heap) and provide a pointer instead, i.e. is: std::vector *f() { std::vector *result = new ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 365 views

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std::cin input with spaces?

#include <string> std::string input; std::cin >> input; The user want to type "Hello World." However, cin fails to recognise the space between the two words. How do I get Cin to see the entire Hello World? I'm trying this using structs, and cin.getline doesn't appear to work. This is my code: struct cd { ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 672 views

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Initialising an array of fixed size in Python

I want to declare an array or ...READ MORE

Aug 11, 2022 in Python by krishna
• 2,820 points • 1,019 views

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In C, are arrays pointers or used as pointers?

First, look at this code When this is ...READ MORE

Aug 11, 2022 in C++ by krishna
• 2,820 points • 264 views

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How to generate a random number in C++?

I'm attempting to develop a dice game, and I need random numbers to represent the sides of the die. I can make a number between 1 and 6). Using #include <cstdlib> #include <ctime> #include <iostream> using namespace ...READ MORE

Aug 11, 2022 in C++ by Nicholas
• 7,760 points • 256 views

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declaring a priority_queue in c++ with a custom comparator

I'm attempting to declare a priority queue of nodes using the comparator function bool Compare(Node a, Node b) (which is outside the node class). I presently have the following: priority_queue<Node, vector<Node>, Compare> openSet; I'm receiving Error: "Compare" is not a type name for some reason. Adding priority_queue<Node, vector Node>, bool Compare> to the declaration. gives me the error 'Error: expecting a '>' I've also attempted: priority_queue<Node, vector<Node>, Compare()> openSet; priority_queue<Node, ...READ MORE