View Compilation Error

0_0_38701447_11748.cpp: In function 'int cantor(int*)':
0_0_38701447_11748.cpp:32:24: error: 'fac' was not declared in this scope; did you mean 'fact'?
   32 |                 ret += fac[9-i-1] * cnt;
      |                        ^~~
      |                        fact