View Compilation Error

0_0_30367925_14136.cpp: In function 'long long int phi(long long int)':
0_0_30367925_14136.cpp:26:23: error: 'c' was not declared in this scope
 inline ll phi (ll x) {c
                       ^
0_0_30367925_14136.cpp:29:19: error: 'res' was not declared in this scope
   if (x % i == 0) res = res / i * (i - 1);
                   ^
0_0_30367925_14136.cpp:32:13: error: 'res' was not declared in this scope
  if (x > 1) res = res / x * (x - 1);
             ^
0_0_30367925_14136.cpp:33:9: error: 'res' was not declared in this scope
  return res;
         ^