How to change the file indicator position in cpp?

[42ndEngineer]

I tried using seekg but it didnt work. Im trying to read a specific line(like 3rd line) by getline function. When i use seekg i cant even read from the start(i tried seekg(0)). It would be great if anyone can help.

 

[srizbf]

post the code

 

[std_match]

I haven't used seekg, but how would you use it to read a specific line?
It seems that seekg doesn't know anything about lines.

I think you should use getline repeatedly until you reach the wanted line, and just ignore the lines before it.

 

[42ndEngineer]

I did what you said but i was looking or an efficient way because if i move indicator where i want it would improve my code so much.