View Compilation Error

0_0_11862548_21283.cpp: In function `ll logmod(ll)':
0_0_11862548_21283.cpp:75: error: `n' undeclared (first use this function)
0_0_11862548_21283.cpp:75: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11862548_21283.cpp: In function `int main()':
0_0_11862548_21283.cpp:104: error: `n' undeclared (first use this function)