Thread: help reading words from a datafile

so what im trying to do is read one line words at the time and seperate the words too.

so I read line 1:
add cars

line 2:
subtract cars
my progarm should know they are in the same line and store the words separete
and I will do something with word 2 depending on what word one was.

so I will have a function that adds the word cars to an array in line 1

here is my code that reads a datafile

Code:

#include <iostream>
#include <string>
#include <sstream>  

using namespace std;

int main() {

    string word;
    ifstream input;
    
    input.open("test.dat",ios::in);

    while (input >> word) {

      cout << word << endl;}
    input.close();



  return 0;
}

i want it to do this read one line at the time and separate the words

Code:

#include <iostream>
#include <string>
#include <sstream>  // for istringstream

using namespace std;

int main() {
  istringstream strLine;
  string line, word;
  int currentLine=0;

  while (getline(cin,line)) {
    ++currentLine;
    
    // clear the strstream and copy the entered line to it
    strLine.clear();
    strLine.str(line);

    // now get each word-sequence from the strLine stream
    while (strLine >> word)
      cout << currentLine << ": " << word << endl;
    }

  return 0;
}

Is there a question you're asking? What is wrong with your second version (other than "I am printing the words instead of storing them")?

well I would like my first code the do the same as the second code post, that is read lines of words not just words separated by spaces.

well I tried to modify my first program to read a line but this is what I have. We just started reading about datafiles.

Code:

0001 #include <iostream>
0002 #include <string>
0003 #include <sstream>  
0004 
0005 using namespace std;
0006 
0007 int main() {
0008     
0009     istringstream strLine;
0010     string line, word;
0011     //string word;
0012     ifstream input;
0013     
0014     input.open("test.dat",ios::in);
0015 
0016     while (input.getline(cin,line)) {
     error: no matching function for call to 'std::basic_ifstream<char, std::char_traits<char> >::getline(webistream&, std::string&)'
0017 
0018       input.strLine.clear();
     error: 'struct std::ifstream' has no member named 'strLine'
0019      input.strLine.str(line);
     error: 'struct std::ifstream' has no member named 'strLine'
0020 
0021     // now get each word-sequence from the strLine stream
0022     while (input.strLine >> word)
     error: 'struct std::ifstream' has no member named 'strLine'
0023       cout << ": " << word << endl;
0024 
0025 
0026 
0027 
0028 
0029     }
0030     input.close();
0031 
0032 
0033 
0034   return 0;
0035 }