reading from a text file one line at a time...

hi...

I need to read from a file :(presumed as strings..)
e.g:

20031030154545
20031030164545
....
....

get each line and manipulate it and print the output as say(say decrement by 3 hrs it..)
20031030124545
20031030134545
...
what i am basically doing is pass each line to a function that converts the string in to a Date object ..and print it..

I am getting some garbage values...

Any help would be appreciated...regards

code:

char buffer[14];
ifstream file("filename.txt");
while(!file.eof()){

file.getline(filename,14);
//strToDate converts the string int to date object...
Date date = strToDate(buffer);
...
}