You need a function to increment time, you'll have to split into hours minutes seconds and milliseconds, increment them and add some ifs for the carry.

For the main loop you'll have to read line by line, if it's a line number just write it to the new file, next line is a timecode, you'll have to split both times and send them to the delay function and then write to the new file, then just copy all the following lines until it finds a line number and so on

Okay this is what I've got so far, because someone on another website answered with that.

Now how do I proceed. I know I need to include:
ifstream subIn;
ofstream subOut;

also need to put cin >> (forhowmuchtimeyouwanttodelay) somewhere in there

then somehow implement everything.

#include <iostream>

using namespace std;

namespace nih{
struct time{
int millisecond; //easier to operate with
};

istream& operator>>(istream &in, time &t){
int h, min, sec, milli;
in>>h; in.get(); //ignore the ':'
in>>min; in.get(); //ignore the ':'
in>>sec; in.get(); //ignore the ',' (note that it uses , instead of .)
in>>milli;
t.millisecond = milli + sec*1000 + min*60*1000 + h*60*60*1000;
return in;
}
}

int main()
{
time start, end;
string arrow;
int id;
//...

while(cin >> id >> start >> arrow >> end){ //stream redirection
start += offset; //to be implemented
end += offset;
cout << id << start << arrow << end;

string line;
while(getline(cin, line) and not line.empty()) //the dialog ends with a blank line
cout << line << '\n';
}
}

If you have to output in hh:mm:ss,ms format it makes no sense overloading >> to turn it into milliseconds since you'll have to overload the output operator to turn it back into a timestamp

>>34196
while not (subIn.eof()){
subIn >> id >> start >> arrow >> end;
subOut << id << start + offset << arrow << end + offset;

string line;

do{
getline(subIn, line);
subout << line;
}while (line.compare ("\n") !=0)
}

>>34254
so what am I supposed to do with this? Did you declared string line again on purpose? Am I supposed to delete the

while(cin >> id >> start >> arrow >> end){ //stream redirection
start += offset; //to be implemented
end += offset;
cout << id << start << arrow << end;

string line;
while(getline(cin, line) and not line.empty()) //the dialog ends with a blank line
cout << line << '\n';
}

and replace it with what you wrote?

Also thank you!

>>34212
Yes I was wondering what does that even do. It returns "in" so I'm still figuring out what's the point

why are you supposed to overload a standard operator just to parse a line like
>hh:mm:ss, mss --> hh:mm:ss, mss

>>34357
how should i do it then?

>>34360
What's wrong with getline()?

Why are you using C++ anyway?

What's the objective of the exercise? What facet of C++ are you supposed to be learning by doing this? Input streams? Objects? Why C++ is not a good substitute for Awk?

If I absolutely had to use C++, I'd use a loop that just did while(readline()), and then used a regular expression library to parse out the timestamps, and a pair of functions to convert the array of ints into milliseconds and back.

>>34397
School assignment! We started learning C++ as our first programming language. Objective of the exercise is to input the file and work with it. We're learning about files so that is that. I will try to work around what you said, I just have to figure out how and what libraries!

>>34408
also we have to do it using argv

>>34408
No, that's the exercise of the exercise.

What are you supposed to be *learning*?

Assuming this is an exercise, they'll have taught you what you needed to know to do it, and then left you to do it.

So you should be solving the problem with whatever techniques you were taught.

And not, for example, observing that C++ is a superset of C, and solving the problem in C.

>>34415
I guess what I'm saying is that you're going to be marked not on whether you solved the problem, but on whether or not you applied the techniques you were supposed to be learning.

So don't do it the best way or the way some guy said to, do it the way that shows you were paying attention the past week.

>>34408
>We started learning C++ as our first programming language.
I'm so sorry.