>>260
int toupper( int ch ) { return ( ch += (('a'<=ch && ch <='z') ? 'A'-'a' :0) );}

int strcmp( char *a, char *b){
  while( *a !=NULL && *b !=NULL && *a++ == *b++ ) ;
  return ( *a - *b );}

int strlen(char *p){int cnt=0;
  while ( *p++ !=NULL) cnt++;
  return( cnt);
}