括号匹配-利用stack判断

bool ParenthesisMatched(char *expr){Stack<int> s(MaxLength);int j, length = strlen(expr);for (int i = 1; i <= length; i++) {if (expr[i - 1] == '(') s.Add(i);else if (expr[i - 1] == ')'){try {s.Delete(j);cout << j << ' ' << i << endl;}catch (OutOfBounds){cout << "No match for right parenthesis" << " at " << i << endl;return false;}}}bool bEmpty = true;while (!s.IsEmpty()){bEmpty = false;s.Delete(j);cout << "No match for left parenthesis at " << j << endl;}if( !bEmpty )return false;return true;}