null terminating a string
- by robUK
Hello,
gcc 4.4.4 c89
just wondering what is the standard way to null terminate a string.
i.e. However, when I use the NULL I get the warning message.
*dest++ = 0;
*dest++ = '\0';
*dest++ = NULL; /* Warning: Assignment takes integer from pointer without a cast */
source code I am using:
size_t s_strscpy(char *dest, const char *src, const size_t len)
{
/* Copy the contents from src to dest */
size_t i = 0;
for(i = 0; i < len; i++)
*dest++ = *src++;
/* Null terminate dest */
*dest++ = 0;
return i;
}
Just another quick question. I deliberately commented out the line that null terminates. However, it still correctly printed out the contents of the dest. The caller of this function would send the length of the string by either included the NULL or not. i.e. strlen(src) + 1 or stlen(src).
size_t s_strscpy(char *dest, const char *src, const size_t len)
{
/* Copy the contents from src to dest */
size_t i = 0;
/* Don't copy the null terminator */
for(i = 0; i < len - 1; i++)
*dest++ = *src++;
/* Don't add the Null terminator */
/* *dest++ = 0; */
return i;
}
Many thanks for any advice,
