/in/foo.cc: In function 'int main()':
/in/foo.cc:14:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
  if(max==a)
    ^
/in/foo.cc:19:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
  if(max==b)
    ^
/in/foo.cc:24:4: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
  if(max==c)
    ^
/in/foo.cc:29:27: warning: 'mid' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d %d", mid, max);
                           ^