substr question

[gustavosserra]

Hi!
I need to use the string::substr function, but its header says:
basic_string substr( size_t index, size_t num );
Can´t I just pass an int or an iterator???

[thefroggy]

Yes, you can just pass an int. size_t is usually just a typedef'd unsigned int.

[gustavosserra]

Thanks!!! I didn´t know the typedef stuff!!
Jut one more question: and if I am using iterators to search the string? What can I do?
I need this thing because I am making a parser.

[7stud]

"and if I am using iterators to search the string?"

You don't get to decide what parameters you're going to pass the function: the function is defined to take two int parameters.

[thefroggy]

You can try subtracting iterators:

string s = str.substr(itr - str.begin(), len);

I'm not sure about the portability of this, so your mileage may vary.

[gustavosserra]

Really thanks!!!