View Compilation Error

0_0_18151195_7912.cpp: In function 'long long int getans(long long int)':
0_0_18151195_7912.cpp:31:20: error: 'n' was not declared in this scope
     long long temp=n,ret=0;
                    ^
0_0_18151195_7912.cpp:34:9: error: 'ret' was not declared in this scope
         ret+=temp;
         ^
0_0_18151195_7912.cpp:36:12: error: 'ret' was not declared in this scope
     return ret;
            ^