C++ Tokenize a string with spaces and quotes

Question

I would like to write something in C++ that tokenize a string. For the sake of clarity, consider the following string:

add string "this is a string with spaces!"

This must be split as follows:

add
string
this is a string with spaces!

Is there a quick and standard-library-based approach?

Answer 1

No library is needed. An iteration can do the task ( if it is as simple as you describe).

string str = "add string \"this is a string with space!\"";

for( size_t i=0; i<str.length(); i++){

    char c = str[i];
    if( c == ' ' ){
        cout << endl;
    }else if(c == '\"' ){
        i++;
        while( str[i] != '\"' ){ cout << str[i]; i++; }
    }else{
        cout << c;
    }
}

that outputs

add
string
this is a string with space!