#include #include #include long hist[UCHAR_MAX+1]; int main (int argc, char **argv) { int c; while ((c = getchar()) != EOF) { hist[c]++; } for (c = 0; c <= UCHAR_MAX; c++) { if (hist[c]) { printf ("%x %d %o %c\t%ld\n", c, c, c, isprint(c) ? c : '.', hist[c]); } } return 0; }