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Viewing cpp/cs104/polymorphism/bracketer by redekopp@usc.edu. You have unsaved changes. Log in above to create, edit, preview and publish Websheets.
PropertyValue
Description
html markup
shown to student
 
Predict what will be printed by this program.
Remarks
Comments, history, license, etc.
 
Copied from problem cpp/cs104/polymorphism/virtfunc1 (author: redekopp@usc.edu)
Copied from problem cpp/cs104/polymorphism/shapes (author: redekopp@usc.edu)
remove
Engine
Template / Reference solution
 
#include <iostream>
#include <string>
#include <vector>
using namespace std;
class Bracketer {
public:
  virtual ~Bracketer() {}
  string bracket(string s) {
    return start() + s + end();
  }
protected:
  virtual string start() { return ""; }
  virtual string end()   { return ""; }
private:
};
class SquareBracketer : public Bracketer {
protected:
  string start() { return "["; }
  string end() { return "]"; }
};
class AngleBracketer : public Bracketer {
protected:
  string start() { return "<"; }
  string end() { return ">"; }
};
int main()
{
  Bracketer *b = new Bracketer;
  Bracketer *sb = new SquareBracketer;
  Bracketer *ab = new AngleBracketer;
  string s1 = "123";
  cout << b->bracket(s1) << endl;
  cout << sb->bracket(s1) << endl;
  cout << ab->bracket(s1) << endl;
  delete b; delete sb; delete ab;
  return 0;
}
C++ test suite
json list of stdin/args tests
e.g. [{"stdin":"hi", "args":["4", "5"]},
{"stdin":"noargs"}]

to just run once with no input use [{}]
 
[{}]
Solution visibility remove
Is example?
i.e., just a demo
remove


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Note: problems are open-source by default (see 'Public permissions'). Assumed license for open problems is Creative Commons 4.0 Attribution-ShareAlike unless specified in 'Remarks'.