/in/foo.c: In function 'main':
/in/foo.c:10:7: warning: statement with no effect [-Wunused-value]
  for(i<=n;i++)
      ~^~~
/in/foo.c:10:14: error: expected ';' before ')' token
  for(i<=n;i++)
              ^
/in/foo.c:16:3: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   if(i=m)
   ^~