c - 我的输出文件文本与输入文本不同

Question

#include <stdio.h>
#include <stdlib.h>

int main() {

  int c;

  FILE *poem = fopen("short.txt", "r");
  FILE *html = fopen("index.html", "w");

  if (poem == NULL){
      perror("Error in opening file");
      return(-1);   
  }
  if (html == NULL){
      perror("Error in opening file");
      return(-1);   
  }

  while((c = fgetc(poem)) != EOF) {
       c = getc(poem);
       fputc(c, html);
  }

  fclose (poem);
  fclose (html);
  return 0;
}

我一直在寻找和尝试，但我无法弄清楚。我读取的文件只有不到一句话，然后输出到index.html时全乱了。我真的不明白代码有什么问题。任何帮助将不胜感激。谢谢!

Answer 1

每次写入都需要读取 2 次

  while((c = fgetc(poem)) != EOF) {  // read
       c = getc(poem);               // read
       fputc(c, html);               // write
  }