This Content is from Stack Overflow. Question asked by Different
I am trying to make a (assembly) parser which uses a string as a guide for how to cut the text to get the tokens I want.
string s = "$t4,"; string guide = "$!,$!,$!"; int i = 1; string test =s.substr(0, s.find_first_of(" ,.t"+to_string(guide[i+1]) )); cout << test << "n";
if s = “$t4” then test = “$t”
what I am expecting it to do is test to be “$t4″, this works for every other $tX except for specifically the number 4 even though it’s not in the (” ,.t”+to_string(guide[i+1])) string
s.find_first_of(" ,.\t" + std::to_string(guide[i + 1]))
Assuming ASCII, that string will be:
44 is the ASCII value of the
guide[i + 1].
The first character in
"$t4," that it’ll find is
4 at position
2, and you then create a substring from
0 and length
2, that is
This Question was asked in StackOverflow by Different and Answered by Ted Lyngmo It is licensed under the terms of CC BY-SA 2.5. - CC BY-SA 3.0. - CC BY-SA 4.0.