CODEWITHSUNDEEP
c++istream
Simon
Simon

Reputation: 242

C++ read string with spaces

I have file like this:

59 137 New York
137 362 Syracuse
216 131 New Jersey
...
..
.

and I would like to read it to a structure: X - Y - name of a city

  char city[100];
  int x , y;
  f.open("map.txt");
  f >> x >> y >> city;
  while (!f.fail()) {
    f >> x >> y >> city;
  }
  f.close();

Problem is, that city reads only until next space, so from New York it reads only New. How should I read whole rest of a line, in some easy and smart way ?

Upvotes: 2

Views: 12449

Answers (4)

john
john

Reputation: 88017

This code reads spaces and handles end of file correctly. None of the other answers do this I think

while ((f >> x >> y).getline(city, 100))
{
}

See this for more information on how to correctly test for end of file.

Of course you should be doing things the easy way using std::string as others have said.

Upvotes: 1

ArgumentNullException
ArgumentNullException

Reputation: 71

Use getline(f, city) for city. So, you have f >> x >> y; getline(f, city);

Upvotes: 1

Drew Dormann
Drew Dormann

Reputation: 63946

The format of your file seems to imply that the name of the city ends at the end of a line, not a space.

You can read that form using getline

  char city[100];
  int x , y;
  f.open("map.txt");
  while ( f ) {
      f >> x >> y;         
      f.getline(city, 100); 
  }
  f.close();

Upvotes: 4

Johnny Mnemonic
Johnny Mnemonic

Reputation: 3922

You can do something like this:

  f.open("map.txt");
  string city;
  int x , y;
  f >> x >> y;
  getline(f,city);

  while (!f.fail()) {
  f >> x >> y;
  getline(f,city);
  }
  f.close();

Upvotes: 3

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