strdup
From cppreference.com
< c | experimental | dynamic
Defined in header
<string.h>
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||
char * strdup(const char *str1);
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(dynamic memory TR) | |
Returns a pointer to a null-terminated byte string, which is a duplicate of the string pointed to by str1. The returned pointer must be passed to free to avoid a memory leak.
If an error occurs, a null pointer is returned and errno may be set.
As all functions from Dynamic Memory TS, strdup
is only guaranteed to be available if __STDC_ALLOC_LIB__ is defined by the implementation and if the user defines __STDC_WANT_LIB_EXT2__ to the integer constant 1 before including string.h
.
Contents |
[edit] Parameters
str1 | - | pointer to the null-terminated byte string to duplicate |
[edit] Return value
A pointer to the newly allocated string, or a null pointer if an error occurred.
[edit] Notes
The function is identical to the POSIX strdup except that it is allowed, but not required to set errno on error.
[edit] Example
Run this code
[edit] See also
(dynamic memory TR)
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allocate a copy of a string up to specified size (function) |
(C11)
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copies one string to another (function) |
allocates memory (function) |