View Compilation Error

0_0_38684387_23286.cpp: In lambda function:
0_0_38684387_23286.cpp:24:9: error: 'f' was not declared in this scope
   24 |         f[0] = inf[0] = 1;
      |         ^
0_0_38684387_23286.cpp:24:16: error: 'inf' was not declared in this scope; did you mean 'sinf'?
   24 |         f[0] = inf[0] = 1;
      |                ^~~
      |                sinf