/in/foo.c: In function 'Output':
/in/foo.c:7:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.c: In function 'FindSecondmax':
/in/foo.c:36:11: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized]
    return imax;
           ^~~~
/in/foo.c: In function 'main':
/in/foo.c:48:5: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized]
     printf("%d %d",x,y);
     ^~~~~~~~~~~~~~~~~~~
/in/foo.c:48:5: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized]