fscanf() 仅拾取文件的第一行

我有一个制表符分隔文件，我正在尝试将其转换为制表符分隔文件。我正在使用 C。我在尝试读取文件的第二行时遇到了困难。现在我只有数万行重复第一行。

#include <stdio.h>
#include <string.h>
#define SELLERCODE  A2LQ9QFN82X636

int main ()
{
     typedef char* string;
     FILE* stream;
     FILE* output;
     string asin[200];
     string sku[15];
     string fnsku[15];
     int quality = 0;

     stream = fopen("c:\\out\\a.txt", "r");
     output = fopen("c:\\out\\output.txt", "w");

     if (stream == NULL)
     { 
         perror("open");
         return 0;
      }

     for(;;)
     {
       fscanf(stream, "%[^\t]\t%[^\t]", sku, fnsku);
       printf("%s\t%s\n",  sku, fnsku);
       fprintf(output, "%s\t%s\t%\t%s\t%s\t%i\n", sku, fnsku, asin, quality);
     }

}

Prefer fgets()读取输入并解析程序中的行，例如使用：sscanf() or strtok().

fscanf is notoriously difficult to use.
Your fscanf is not performing any conversions after the first line.
It reads characters up to a TAB, then ignores the TAB, and reads more characters up to the next TAB. On the 2nd time through the loop, there is no data for sku: the 1st character is a TAB.

Do 检查返回值尽管。它有很大帮助。

chk = fscanf(stream, "%[^\t]\t%[^\t]", sku, fnsku);
/* 2 conversions: sku and fnsku */
if (chk != 2) {
    /* something went wrong */
}