View Compilation Error

0_0_29195757_28118.cpp:6:13: error: initializer provided for function
 int f(int n)(return n*n+n+41;)
             ^
0_0_29195757_28118.cpp:6:30: error: expected unqualified-id before ')' token
 int f(int n)(return n*n+n+41;)
                              ^