Cin une énumération

#include <iostream>
#include <stdexcept>

using namespace std;

enum X { A, B, C };

istream& operator>> ( istream& in, X& x )
{
  int val;

  if ( in>> val ) {
    switch ( val ) {
    case A: case B: case C:
      x = X(val); break;
    default:
      throw out_of_range ( "Invalid value for type X" );
    }
  }

  return in;
}

int main()
{
  X x;

  try {
    cin>> x;
    cout<< x <<endl;
  } catch ( out_of_range& ex ) {
    cerr<< ex.what() <<endl;
  }
}

Source: daniweb.com

Similar codes

1 vote265 views1 answer
Doubly linked list c++ code
C++
0 vote238 views1 answer
Queue cpp
C++
6 votes262 views2 answers
Stoi
C++
2 votes265 views3 answers
Vector with initial size
C++
5 votes248 views2 answers
Sleep c++ windows
C++
0 vote254 views2 answers
Constructor overloading in c++
C++
0 vote292 views1 answer
Is palindrom
C++
-1 vote259 views1 answer
Equal elements in two arrays in c++
C++
0 vote251 views1 answer
Ue4 foreach loop c++
C++
0 vote232 views1 answer
C++ code executio canntot proceed because glew32.dll was not founud
C++