/in/foo.cc: In function 'int main()':
/in/foo.cc:5:8: warning: statement has no effect [-Wunused-value]
  abs(x)<=10000;
  ~~~~~~^~~~~~~
/in/foo.cc:9:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  else if(x=0)
             ^
/in/foo.cc:13:9: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<< y <<endl;
         ^