Using getline with file input in C

Question

I am trying to do a simple beginner s task in C    I have a text file containing the line   John Smith 31   That s it  I want to read in this data using an ifstream variable  But I want to read the name  John Smith  into one string variable  and then the number  31  into a separate int variable   I tried using the getline function  as follows   ifstream inFile  string name  int age   inFile open  file txt     getline inFile  name    inFile  gt  gt  age    cout  lt  lt  name  lt  lt  endl  cout  lt  lt  age  lt  lt  endl     inFile close          The problem with this is that it outputs the entire line  John Smith 31   Is there a way I can tell the getline function to stop after it has gotten the name and then kind of  restart  to retrieve the number  Without manipulating the input file  that is

User · Accepted Answer

getline  as it name states  read a whole line  or at least till a delimiter that can be specified   So the answer is  no   getlinedoes not match your need   But you can do something like   inFile  gt  gt  first name  gt  gt  last name  gt  gt  age  name   first name         last name

User · Answer

you can use getline from a file using this code  this code will take a whole line from the file  and then you can use a while loop to go all lines while  ins    ifstream ins filename   string s  std  getline  ins s

User · Answer

ifstream inFile  string name  temp  int age   inFile open  quot file txt quot     getline inFile  name           use     as separator  default is   n   newline   Now name is  quot John quot   getline inFile  temp           Now temp is  quot Smith quot  name append 1       name    temp  inFile  gt  gt  age    cout  lt  lt  name  lt  lt  endl  cout  lt  lt  age  lt  lt  endl     inFile close

User · Answer

you should do as   getline name  sizeofname    n    strtok name          This will give you the  joht  in name then to get next token   temp   strtok NULL          temp will get  smith  in it  then you should use string concatination to append the temp at end of name  as   strcat name  temp      you may also append space first  to obtain a space in between

[c++] Using getline() with file input in C++

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