Read text file into string C ifstream

Question

void docDB         int sdb   0       ifstream dacb  kitudacbiet txt         if  dacb is open             cout lt  lt  Deo doc dc file  lt  lt endl       else            while  dacb eof                    dacb gt  gt dbiet sdb  kitu                 dacb gt  gt dbiet sdb  mota                   getline dacb dbiet sdb  mota                                    string a                    while  dacb gt  gt a      n                      strcat dbiet sdb  mota a                   dbiet sdb  mota  a                                                    sdb                            Text file   kitudacbiet txt     Dau xuyet phai   Dau     Dau     Ky hieu     Dau mo ngoac   Dau dong ngoac     I want read firt string of line into dbiet sdb  kitu and the rest of line into dbiet sdb  mota   Example  line 1       Dau xuyet phai   dbiet sdb  kitu       and dbiet sdb  mota    Dau xuyet phai   I would like to read line by line until i met downline character    n    How to do this  Sorry my english not good Thank

User · Accepted Answer

To read a whole line from a file into a string, use std::getline like so:

 std::ifstream file("my_file");
 std::string temp;
 std::getline(file, temp);

You can do this in a loop to until the end of the file like so:

 std::ifstream file("my_file");
 std::string temp;
 while(std::getline(file, temp)) {
      //Do with temp
 }

References

http://en.cppreference.com/w/cpp/string/basic_string/getline

http://en.cppreference.com/w/cpp/string/basic_string

User · Answer

It looks like you are trying to parse each line   You ve been shown by another answer how to use getline in a loop to seperate each line   The other tool you are going to want is istringstream  to seperate each token   std  string line  while std  getline file  line         std  istringstream iss line       std  string token      while  iss  gt  gt  token                   do something with token

User · Answer

getline fin  buffer    n    where fin is opened file ifstream object  and buffer is of string char type where you want to copy line

[c++] Read text file into string. C++ ifstream

References

Examples related to c++

Examples related to ifstream