/in/foo.cc: In function 'int main()':
/in/foo.cc:11:26: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[10000]' [-Wformat=]
     while (scanf("%s", &s)==1 && ((s[0]!='E' && s[1]!='N' && s[2]!='D') || strlen(s)!=3))  
                          ^