#include <stdio.h>

int main ( int argc, char *argv[] ) {
	FILE *p = 0;
	if (argc > 1) {
		p = fopen(argv[1], "rb");
	}
	if ( !p ) { printf("Brak pliku.\n"); return 1; }
	
	int znak = 0, koniec_linii = 0;
	while ( (znak = fgetc(p)) != EOF ) {
		if ( znak > ' ' && znak <= '~' ) {
			if( !koniec_linii ) koniec_linii = 1;
			putchar(znak);
		}
		else {
			if ( koniec_linii ) { putchar ( '\n' ); koniec_linii = 0; }
		}
	}
	fclose(p);
	return 0;
}