/in/foo.cc: In function 'int FindiSecondMax(int, int*)':
/in/foo.cc:6:6: warning: unused variable 'i' [-Wunused-variable]
  int i,j,p,k=0,second,temp;
      ^
/in/foo.cc:6:16: warning: variable 'second' set but not used [-Wunused-but-set-variable]
  int i,j,p,k=0,second,temp;
                ^~~~~~
/in/foo.cc:6:10: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
  int i,j,p,k=0,second,temp;
          ^