View Compilation Error

0_0_35776609_10198.cpp: In function 'double c(double)':
0_0_35776609_10198.cpp:4:2: error: 'll' was not declared in this scope
  ll i,s = 1;
  ^
0_0_35776609_10198.cpp:5:7: error: 'i' was not declared in this scope
  for (i = 1; i <= a; i++)
       ^
0_0_35776609_10198.cpp:6:3: error: 's' was not declared in this scope
   s = s*i;
   ^
0_0_35776609_10198.cpp:7:9: error: 's' was not declared in this scope
  return s;
         ^