#include main() /* counts digits, white space, others */ { int c, i, num_digits[10], num_white, num_other; num_white = num_other = 0; for(i = 0; i < 10; i++) /* initialize */ num_digits[i] = 0; while(c = getchar() != EOF){ switch(c){ case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': num_digits[c - '0']++; break; case ' ': case '\t': case '\n': num_white++; break; default: num_other++; break; } } printf("digits ="); for(i = 0; i < 10; i++) printf(" %d", num_digits[i]); printf("white space = %d, other = %d\n", num_white, num_other); }