使用fgets删除文件中的字符串 [英] Delete a string in a file using fgets

问题描述

我有一个普通的文本文件如下：



-------------------

Debdipta

1234567 8

rajat

123432 4

Kaushik

685784 7

djghkvnfj

213122 6

------------------- -



我想从这个文件中删除一个字符串ex：下面 -



---- -----------

Debdipta

1234567 8

Kaushik

685784 7

djghkvnfj

213122 6

--------------------



您可以看到rajat及其相应字段已被删除：



我想通过C进行此操作？

我可以通过以下代码提交此字符串并将文件指针放在那里：

I have a normal text file as below:

-------------------
Debdipta
1234567 8
rajat
123432 4
Kaushik
685784 7
djghkvnfj
213122 6
--------------------

I want to delete a string from this file ex:below-

---------------
Debdipta
1234567 8
Kaushik
685784 7
djghkvnfj
213122 6
--------------------

You can see that rajat and its corresponding field is deleted:

I want to do this trough C?
I can file this string and put file pointer there through following code:

fseek(fp, 0, SEEK_SET);
    while(!feof(fp))
    {
        fgets(strFileMem, MAX_PATH, fp);
        fseek(fp, 0, SEEK_CUR);
        if( NULL == strstr(strName, strFileMem) )
        {
            break;
        }
    }
    int ierr = fputs("\n", fp);
    ierr = fputs("\n", fp);

不知道输入什么东西???



任何其他代码？



谢谢

Any idea what to put in fputs???

any other code?

thanks

推荐答案

请参阅以下链接

http：//forums.devshed。 COM / C编程-42 /删除线-从-A-文件在-C-360169.html 。可能对你有帮助

Refer the link below
http://forums.devshed.com/c-programming-42/deleting-lines-from-a-file-in-c-360169.html. may be it is help ful for you

fputs将一个字符串输出到一个文件，它不会只吃一个字符串。



您应该将整个文件读入缓冲区并使用char数组执行删除操作。然后将修改后的字符串输出回文件。

fputs outpus a string to a file, it will not just eat a string.

You should read the whole file into a buffer and do the delete operation with a char array. Then output the modified string back to the file.

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