Parsing a text file in c++

[messengerman]

i want to parse a file,my problem is in lines 2,3,4 of each person(every 4line make a person from my class person)numbers of my variables in lines 2,3,4 changed.i want to push_back each of variable in line 2 in a vector until it comes to "\n",i want to continue this work(make person)until the cursor comes to "---------------"
this is a sample of my text file:

David bekham
105700 -6.42372e+006 12345
mac vaio dell lenovo
50 30 40
Messi
-105700 1.49887e+007
toshiba acer dell asus
50 70 53
C.Ronaldo
6.39639e+006 21415
msi dell lenovo
30 42 14
---------------

more details: http://i52.tinypic.com/2j0nn8g.png

[jonsca]

I would use getline() to read in each line as a std::string. When it comes to those lines which are variable, read the string into a stringstream and use the >> extraction operator to pull out what you need.

That way you can compare each line with "----------" to see when to stop.

[vinayakgarg]

Is it reasonable for you to print file as binary file instead of text file?
This way you can read and write entire structure.
But yeah if you need a text file only then you can :
Instead of ------------ you can use some character which you won't use anywhere.

read a line using getline and compare it with above symbol.
If it is not true read thrice and each time separate strings.
Then you can use atoi() and atof()

Vinayak

[messengerman]

how can define that when cursor comes to specific char then break from loop?what is the clause of loop?

[jonsca]

Take a substring (2 characters) of the string you read in using getline, and compare it to "--" (unless you think your professor will put in aberrant lines to test your program. Or if you know the number of dashes ahead of time, compare it with that.