/in/foo.cc: In function 'int findmax(int*, int)':
/in/foo.cc:6:9: warning: unused variable 'x' [-Wunused-variable]
     int x;
         ^
/in/foo.cc: In function 'int findsemax(int*, int)':
/in/foo.cc:53:12: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
     return x;
            ^