View Compilation Error

0_0_31127880_2859.cpp:13:16: error: 'S' does not name a type
 bool cmp(const S q,const S w){
                ^
0_0_31127880_2859.cpp:13:26: error: 'S' does not name a type
 bool cmp(const S q,const S w){
                          ^
0_0_31127880_2859.cpp: In function 'bool cmp(int, int)':
0_0_31127880_2859.cpp:14:11: error: request for member 'val' in 'q', which is of non-class type 'const int'
  return q.val>w.val;
           ^
0_0_31127880_2859.cpp:14:17: error: request for member 'val' in 'w', which is of non-class type 'const int'
  return q.val>w.val;
                 ^