View Compilation Error

0_0_33721087_8549.cpp: In function 'int main()':
0_0_33721087_8549.cpp:10:6: error: expected unqualified-id before '=' token
   ll = a ,b;
      ^
0_0_33721087_8549.cpp:11:3: error: 'a' was not declared in this scope
   a = n*n*n;
   ^
0_0_33721087_8549.cpp:12:3: error: 'b' was not declared in this scope
   b = (n+1)*(n+1)*(n+1);
   ^