View Compilation Error

0_0_25403288_25352.cpp: In function 'int main()':
0_0_25403288_25352.cpp:14:4: error: 'ans' was not declared in this scope
    ans = n*n*n/27;
    ^
0_0_25403288_25352.cpp:17:5: error: 'ans' was not declared in this scope
     ans = n*n*n/32;
     ^
0_0_25403288_25352.cpp:20:9: error: 'ans' was not declared in this scope
   cout<<ans<<endl;
         ^