View Compilation Error

0_0_36124115_11033.cpp: In function 'int main()':
0_0_36124115_11033.cpp:6:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_36124115_11033.cpp:13:25: error: 'qsort' was not declared in this scope
         qsort(a,3,1,&cmp);
                         ^