std::memset
来自cppreference.com
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| Defined in header <cstring>
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| void* memset( void* dest, int ch, std::size_t count ); |
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。的值转换
chunsigned char，并将其复制到每个count字符指向的对象的dest。如果对象是不平凡的拷贝（例如，标量，数组，或C-兼容的结构），其行为是不确定的。 count是大于dest所指向的对象的大小，该行为是未定义.Original:
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.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[编辑] 。参数。
| dest | - | 。指针指向的对象来填充。
Original: pointer to the object to fill The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| ch | - | 。填充字节。
Original: fill byte The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| count | - | 。数字节填充。
Original: number of bytes to fill The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
===。
返回值。===
dest
[编辑] 。为例。
#include <iostream> #include <cstring> int main() { int a[20]; std::memset(a, 0, sizeof(a)); std::cout << "a[0] = " << a[0] << '\n'; }
Output:
a[0] = 0
[编辑] 。另请参阅。
| 一个缓冲区拷贝到另一个地方 Original: copies one buffer to another The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数） | |
| 分配一个值，该值到的元素数 Original: assigns a value to a number of elements The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板） | |
| （C++11） |
checks if a type is trivially copyable （类模板） |
| C documentation for memset
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