gistfile1.c

#include <stdio.h>
#define IN  1 /*光标在单词中时状态为1*/
#define OUT 0 /*光标在单词外，即完成一个单词*/
main()
{
    int c, nl, nw, nc, state;
    printf("对输入的行、单词、字符进行计数\n");
    state = OUT;
    nl = nw = nc = 0;
    while ((c = getchar()) != EOF){
        ++nc;
        if (c == '\n'){
            ++nl;
            printf("nl+1\n");      /*检验循环是否运行*/
        }
        if (c == ' ' || c == '\n' || c == '\t'){
            state = OUT;
            printf("test\n");      /*检验循环是否运行*/
        }
        else if (state == OUT){
            state = IN;
            ++nw;
            printf("nw+1\n");      /*检验循环是否运行*/
        }
    }
    printf("以上输入包含：\n行数：");
    printf("%8d\n", nl);
    printf("单词数：");
    printf("%6d\n", nw);
    printf("字符数：");
    printf("%6d\n", nc);
}