/* cf - print character frequencies */float f[128];main(argc, argv)int argc;char *argv[];{	int i, c, nc;	float cutoff, atof();	if (argc <= 1)		cutoff = 0.0;	else		cutoff = atof(argv[1])/100;	for (i = 0; i <= 127; )		f[i++] = 0.0;	nc = 0;	while ((c = getchar()) != -1) {		f[c] += 1;		nc++;	}	printf("char\tfreq\n");	for (i = 0; i <= 127; ++i)		if (f[i] && f[i]/nc >= cutoff) {			if (i <= ' ')				printf("%03o", i);			else				printf("%c", i);			printf("\t%.1f\n", 100*f[i]/nc);		}	return 0;}