Split string into sentences?

[InsanelyNormal]

I need a little code to split a phrase/paragraph into sentences.

For example:
"My house is on fire. That should not be happening."
Is splitted into "My house is on fire." and "That should not be happening." and stored into separate strings.

[Chervil]

Usually a sentence ends with a full stop '.' (period).
But there might be others, for example '!' or '?'.

You can use find_first_of() to search a string for one of several characters. Then use substr() to extract the substring.

http://www.cplusplus.com/reference/string/string/find_first_of/
http://www.cplusplus.com/reference/string/string/substr/

[InsanelyNormal]

There is one thing i don't understand about substr().
Does it affect the string (remove the part selected) or would you have to do that sepparately?

[Chervil]

No, substr() doesn't change the original string.

You don't actually need to modify the original string, just set the beginning of the next sentence to the first non-whitepace character in the string.

Though if you wanted to remove the substring as well, you could use erase().

http://www.cplusplus.com/reference/string/string/erase/

[InsanelyNormal]

Im still confused about the "set the begining of the next sentence to the first non-whitespace character". Could you please provide a little code example?

[Chervil]

Here's a partial example. It shows some of the ideas needed.

    string text = "My house is on fire! That should not be happening.";

    size_t start = 0;
    // look for end of sentence
    size_t finish = text.find_first_of(".!?", start);
    
    if (finish != string::npos)
    {
        // end of sentence was found, do something here.

        // now find start of next sentence
        start = text.find_first_not_of(" \t\n", finish+1);
    }

[InsanelyNormal]

Oh, thakns. That helped.