View Compilation Error

0_0_38948596_3304.cpp: In function 'void input()':
0_0_38948596_3304.cpp:19:9: error: 'io' was not declared in this scope; did you mean 'i'?
   19 |         io.xstring(s); int t = strlen(s);
      |         ^~
      |         i
0_0_38948596_3304.cpp: In function 'int main()':
0_0_38948596_3304.cpp:44:16: error: 'io' was not declared in this scope
   44 |     int t; t = io.xint();
      |                ^~