/in/foo.cc: In function 'int main()':
/in/foo.cc:10:7: warning: unused variable 'k' [-Wunused-variable]
   int k=i;
       ^
/in/foo.cc:18:11: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
  if(b=3150)
           ^
/in/foo.cc: In function 'int ss(int)':
/in/foo.cc:34:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^