foo.cc: In function ‘int fmax2(int*, int)’:
foo.cc:5:15: warning: unused variable ‘j’ [-Wunused-variable]
    5 |         int i,j,t=0,max1,max2;
      |               ^
foo.cc:55:1: warning: control reaches end of non-void function [-Wreturn-type]
   55 | }
      | ^