View Compilation Error

0_0_22082702_10287.cpp: In function 'int main()':
0_0_22082702_10287.cpp:58:8: error: 'n' was not declared in this scope
    if (n == 0)
        ^
0_0_22082702_10287.cpp:66:3: error: 'ret' was not declared in this scope
   ret
   ^
0_0_22082702_10287.cpp:66:3: error: expected '}' at end of input