For example I have a string:
int random_int = 123; // let's pretend this integer could have various values!!
std::string str = "part1 Hello : part2 " + std::to_string(random_int) + " : part3 World ";
All parts are divided by the characters :
Let's say I want to find a substring from "part2" to the next character :, which would return part2 123 in this case.
I know how to find the pos of "part2" by str.find("part2"), but I don't know how to determine the length to the next : from that "part2", because the length can be of various length.
For example, I know that part3 substring could be extracted with str.substr(str.find("part3"));, but only because it's at the end...
So, is there a subtle way to get the substring part2 123 from that string?
std::string::findtakes a position find in the string should start at as the second argument, so it seems you can find the first:and then dostr.find(':', previous_delimeter_position + 1)std::string str = "part2 123 : part3 World : part1 Hello "and I still want to return "part2 123" with the same code piece?std::istringstreamcoupled withstd::getlinemakes an easy general purpose tokenizer.