std::memset
From cppreference.com
Defined in header
<cstring>
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void* memset( void* dest, int ch, std::size_t count );
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Converts the value ch
to unsigned char and copies it into each of the first count
characters of the object pointed to by dest
. If the object is not trivially-copyable (e.g., scalar, array, or a C-compatible struct), the behavior is undefined. If count
is greater than the size of the object pointed to by dest
, the behavior is undefined.
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[edit] Parameters
dest | - | pointer to the object to fill |
ch | - | fill byte |
count | - | number of bytes to fill |
[edit] Return value
dest
[edit] Example
Run this code
#include <iostream> #include <cstring> int main() { int a[20]; std::memset(a, 0, sizeof(a)); for (int ai : a) std::cout << ai; }
Output:
00000000000000000000
[edit] See also
copies one buffer to another (function) |
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assigns a value to a number of elements (function template) |
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(C++11)
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checks if a type is trivially copyable (class template) |
C documentation for memset
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