c语言中统计单词数目程序

#include <stdio.h>
#include <ctype.h>
#include <stdbool.h>
#define STOP ‘|‘

int main(void)
{
    char ch;
    char prep;
    long n_ch = 0L;
    int n_lines = 0;
    int n_words = 0;
    int n_p_line;
    bool inword = false;
    
    while((ch = getchar()) != STOP)
    {
        n_ch++;
        if(ch == ‘\n‘)
            n_lines++;
        if(!isspace(ch) && !inword)
        {
            inword = true;
            n_words++;
        }
        if(isspace(ch) && inword)
            inword = false;
        prep = ch;
    }
    if(prep != ‘\n‘)
        n_p_line = 1;
    
    printf("n_ch    : %ld\n", n_ch);
    printf("n_lines : %d\n", n_lines);
    printf("n_words : %d\n", n_words);
    printf("n_p_line: %d\n", n_p_line);
    
    return 0;
}