Owl Get a Life

Compile Error

guanine.cpp: In function ‘int main()’:
guanine.cpp:19:11: error: expected ‘]’ before ‘:’ token
19 | q = q[0:index]
| ^
| ]
guanine.cpp:19:11: error: no match for ‘operator=’ (operand types are ‘std::deque<char>’ and ‘__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type’ {aka ‘char’})
In file included from /usr/include/c++/9/deque:69,
from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:68,
from guanine.cpp:1:
/usr/include/c++/9/bits/deque.tcc:93:5: note: candidate: ‘std::deque<_Tp, _Alloc>& std::deque<_Tp, _Alloc>::operator=(const std::deque<_Tp, _Alloc>&) [with _Tp = char; _Alloc = std::allocator<char>]’
93 | deque<_Tp, _Alloc>::
| ^~~~~~~~~~~~~~~~~~
/usr/include/c++/9/bits/deque.tcc:94:28: note: no known conversion for argument 1 from ‘__gnu_cxx::__alloc_traits<std::allocator<char>, char&