從終端輸入中統計數字，空白符，其他字符出現次數

// Count digits, white space, others #include <stdio.h> int main() { int c, i, nwhite, nother; int ndigit[10]; nwhite = nother = 0; for (i = 0; i < 10; i++) { ndigit[i] = 0; } while ((c = getchar()) != EOF) { if (c >= '0' && c <= '9') { ++ndigit[c - '0']; } else if (c == ' ' || c == '/t' || c == '/n') { ++nwhite; } else { ++nother; } } for (i = 0; i < 10; i++) { printf("ndigit[%d] = %d, ", i, ndigit[i]); } printf("white space = %d, other = %d/n", nwhite, nother); return 0; }