need help for getline() funciton

hi;
for example i have a file includes x lines
how can i read all lines in a for loop?

[code]

for (..i..)
{
ptr.getline(buffer[i],100);
}

try
for(int i=0;!filename.eof();i++)

That is incorrect. Since the end of file condition does not occur till after a read, the comparison is required at the top of the loop.

Code:

---

>> while(file.getline(/*this goes first*/) && file.good()) // certain
>> {/*do it*/}
>> if(!file.eof()) // optional
>> {/*handle bad errors*/}

---