bitset class and operations???

This is a discussion on bitset class and operations??? within the C++ Programming forums, part of the General Programming Boards category; #include<iostream.h> #include<bitset.h> int main() { bitset bt; bt.set(0); cout<<bt.to_string()<<endl; return 0; } I am using microsofts C++ and it doesn't ...

  1. #1
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    bitset class and operations???

    #include<iostream.h>
    #include<bitset.h>

    int main()
    {
    bitset bt;

    bt.set(0);

    cout<<bt.to_string()<<endl;
    return 0;
    }


    I am using microsofts C++ and it doesn't reconize the bitset.h, if I remove it the the rest bombs out???

    Am i using it incorrectly?

    I will continue searching for other solutions. Thanks

  2. #2
    Registered User
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    Try the standard headers

    <iostream>
    <bitset>

    using namespace std;

    etc
    Joe

  3. #3
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    I was able to get it to work using namespace std and passing it the correct size value of the templete, the problem lies is that we are not allowed to use namespace std and want to use the class by itself and it is not allowing me too. If there is another class or function that has the same funtionallity, please let me know. If worse comes to worse I will write me a home grown version. Thanks.

  4. #4
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    So you've been instructed to use a standard class, but aren't allowed to use the standard headers? Curious. Perhaps you've mis-interpreted the question/request/assignment, and are supposed to write your own version of bitset?

    If not, I'm sure there are plenty of bitset implementations around such as this one. Seems a pretty pointless excersise though.
    Joe

  5. #5
    Code Goddess Prelude's Avatar
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    If you are required to use the STL bitset class (as your code implies) then this should work a bit better (pun most definitely intended ):
    Code:
    #include <iostream>
    #include <string>
    #include <bitset>
    
    int main()
    {
      std::bitset<8> bt;
      
      bt.set(0);
      std::cout<< bt.to_string() <<std::endl;
    
      return 0;
    }
    If you have to create your own bitset class (a bit silly if you ask me), then consider using std::vector<bool>
    Code:
    #include <algorithm>
    #include <iostream>
    #include <vector>
    
    int main()
    {
      std::vector<bool> bit;
    
      bit.resize ( 8 );
      bit[7] = 1; // Set the least signifigant bit
      
      std::copy ( bit.begin(), bit.end(), std:: ostream_iterator<bool> ( std::cout ) );
      std::cout<<std::endl;
    
      return 0;
    }
    -Prelude
    My best code is written with the delete key.

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