View Compilation Error

0_0_18808441_8300.cpp: In function 'void I()':
0_0_18808441_8300.cpp:21:31: error: a function-definition is not allowed here before '{' token
 bool check(int sz, int buf[]) {
                               ^
0_0_18808441_8300.cpp:79:1: error: expected '}' at end of input
 }
 ^