CODEWITHSUNDEEP
c++stringchar
M.K.
M.K.

Reputation: 650

convert string to char , space character was not converted correctly

I use the code that allows me to convert any type (int, double, float, char) to string. I tested the program and choose char as type value.

stringstream ss;
    string s;
    char c = '3';
    ss << c;
    ss >> s;

    cout << "CHAR" << endl;
    bitset<8> bs2( (char) c );
    for( int i = (int) bs2.size(); i >= 0; i-- )
        cout << bs2[i] << " ";
    cout << endl;

    bitset<8> bs1( (char) s.c_str()[0]);
    cout << "STRING" << endl;
    for( int i = (int) bs1.size(); i >= 0; i-- )
        cout << bs1[i] << " ";
    cout << endl;

The output is

CHAR
0 0 0 0 0 0 0 1 1 
STRING
0 0 0 0 0 0 0 1 1

But I found one strange thing. I set char c = ' ' and the value was not convert correctly.

CHAR
0 0 0 1 0 0 0 0 0 
STRING
0 0 0 0 0 0 0 0 0

I could not find explanation for it and what I did wrong.

Upvotes: 1

Views: 1532

Answers (2)

Doncho Gunchev
Doncho Gunchev

Reputation: 2239

The >> operator won't return the space, use ss.str(); to get the stringstream value.

Upvotes: 2

DRH
DRH

Reputation: 8116

operator>> for std::string will only read until the first whitespace character encountered. If you want to extract all of the information in the std::stringstream, use the str() member function:

s = ss.str();

For reference see the description of operator>>(istream& s, string& str) and stringstream::str()

Upvotes: 3

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