View Compilation Error

0_0_7082398_6436.cpp: In function `double f(int)':
0_0_7082398_6436.cpp:4: error: expected `(' before "n"
0_0_7082398_6436.cpp:5: error: expected primary-expression before "else"
0_0_7082398_6436.cpp:5: error: expected `;' before "else"
0_0_7082398_6436.cpp: In function `int main()':
0_0_7082398_6436.cpp:10: error: expected unqualified-id before '&' token
0_0_7082398_6436.cpp:11: error: expected `}' at end of input
0_0_7082398_6436.cpp:11: error: expected `}' at end of input