View Compilation Error

0_0_33343805_20697.cpp: In function 'long long int inv(long long int, long long int)':
0_0_33343805_20697.cpp:19:9: error: 'resl' was not declared in this scope
  return resl
         ^
0_0_33343805_20697.cpp:20:1: error: expected ';' before '}' token
 }
 ^