View Compilation Error

0_0_33679777_14835.cpp: In function 'int ff(int, int)':
0_0_33679777_14835.cpp:34:2: error: expected ';' before 'int'
  int c=invf[2];
  ^
0_0_33679777_14835.cpp:35:26: error: 'c' was not declared in this scope
  ans=(long long)ans*qpow(c,(2*i-n-1)/2,p)%p;
                          ^