我今天刚开始学C..看的是K&R的《The C programming Language》
尝试了下例子，可是却无法输出printf里的内容，把while去掉后可以显示，所以应该不是printf本身的问题，求解..

#include <stdio.h>
#define IN   1  /* inside a word */
#define OUT  0  /* outside a word */
/* count lines, words, and characters in input */

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 == '\n' || c == '\t')
            ++nwhite;
        else
        ++nother;
    }
    printf("digits =");
    for (i = 0; i < 10; ++i)
        printf(" %d", ndigit[i]);
    printf(", white space = %d, other = %d\n", nwhite, nother);
}

谢谢了030
不过EOF不是指结尾么？