View Compilation Error

0_0_21950347_17082.cpp:12:1: error: expected ',' or ';' before '{' token
 {
 ^
0_0_21950347_17082.cpp: In function 'int main()':
0_0_21950347_17082.cpp:26:17: error: 'func' cannot be used as a function
   int r = func(n);
                 ^