Vim Open TXT file see ^@ character

' + ' characters are invisible characters, the Vim editor uses the ' ^@ ' character to display the ' \ S ' character.

Look at the following code:

 #include  <stdio.h> #include  <stdlib.h>int main ( ) {    char    buf[] =  "hello world!";     file    * fp = null;    size_t   ret = 0;        fp = fopen ("./test.txt ", " a ");    if  (fp == null)  {         printf ("fopen error!\n");         exit ( -1);     }    ret = fwrite (Buf, sizeof (char),  sizeof (BUF), &NBSP;FP);     printf ("ret = %zd\n",  ret);         fclose (FP);     exit (0);} 

After the program executes, a test.txt text file is generated in the current directory. Use the Vim editor to open the content as follows:

Hello world!^@

The problem appears in the following code:

ret = fwrite (buf, sizeof (char), sizeof (BUF), FP);

This statement puts ' + ' characters are written to the Test.txt text file.

Change this statement to the following form:

ret = fwrite (buf, sizeof (char), strlen (BUF), FP); Need <string.h>

The resulting text file will no longer contain the ' \ S ' character.

This article is from the "Drifting Away" blog, make sure to keep this source http://shuying.blog.51cto.com/9460406/1914275

Vim Open TXT file see ^@ character