C语言新手问题！

Question

#include<stdio.h>#include<stdbool.h>#include<ctype.h>#define STOP '|'int main(void){ char c; // 读入字符  char prev; //读入的前一个字符  long n_chars = 0L;//字符数  int n_lines = 0;//行数  int n_words = 0;//单词数  int p_lines = 0;//不完整的行数  bool inword = false;//如果C在单词中，inword 等于true printf("Enter text to be analyzed (| to terminate):"); prev = '\n'; //用于识别完整的行 while((c = getchar()) != STOP) { n_chars++;  //统计字符  if(c == '\n')  n_lines++; //统计行    if(!isspace(c) && !inword) { inword = true;//开始一个新的单词 n_words++;//统计单词  }  if(isspace(c) && inword)   inword = false;//达到单词的末尾 prev = c;  }  if(prev != '\n')   p_lines = 1; printf("characters = %ld, words = %d, limes = %d,",n_chars,n_words,n_lines); printf("partial lines = %d\n",p_lines); return 0;}输入： Reason is apowerful servant butan inadequate master.|问：从while开始，这个循环是 从输入的内容中 一个字符一个字符的循环一遍？还是直接整体开始循环的？