2013年7月2日 · strdup and strndup are defined in POSIX compliant systems as: char *strdup(const char *str); char *strndup(const char *str, size_t len); The strdup() function …

2017年1月23日 · You seem confused. Forget what you know about pointers. Let's work with ints. int x; x = rand(); // Let us consider this the "old value" of x x = getchar(); // Let us consider this …

2012年12月24日 · char *strdup(char *pszSrch); strdup will allocate storage the size of the original string. If storage allocation is successful, the original string is copied to the duplicate string. …

2011年9月28日 · therefore, the MS guys decided to replace strdup with _strdup. I'd just continue using strdup. It's unlikely the C committee will define strdup to something else than POSIX. …

strdup() isn't standard C.It is a POSIX extension.. To make strdup() available even with strict C99 compliance for GCC when using the option -std=c99 you need to #define at least one of the …

2014年7月29日 · The strdup() function returns a pointer to a new string which is a duplicate of the string s. Memory for the new string is obtained with malloc(3), and can be freed with free(3). …

I tried to build my own strdup function, as I understand the function is supposed to work as strcpy but with a string that can be used in another function, but in my prototype I dont understand …

2013年12月3日 · I have to allocate an array of 1000 pointers to character strings, read in each character string from stdin and strdup each line into the array. I did the following: char …

From man strdup: Memory for the new string is obtained with malloc(3), and can be freed with free(3). So you need to free the space allocated and returned by strdup. Say you invoke …

The strdup() function shall return a pointer to a new string, which is a duplicate of the string pointed to by s. The returned pointer can be passed to free() . A null pointer is returned if the …