std::strncpy
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| Defined in header <cstring>
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| char *strncpy( char *dest, const char *src, std::size_t count ); |
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。
count字符的字节串的副本指出，src（包括终止空字符）的字符数组指出，dest. Original:
Copies at most
count characters of the byte string pointed to by src (including the terminating null character) to character array pointed to by dest. The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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。
count达到之前的整个字符串src被复制，产生的字符数组是不是空终止Original:
If
count is reached before the entire string src was copied, the resulting character array is not null-terminated.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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。之后，如果从
src终止空字符复制，count没有达到，额外的空字符，直到总的dest字符写入count已经写.Original:
If, after copying the terminating null character from
src, count is not reached, additional null characters are written to dest until the total of count characters have been written.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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。如果字符串重叠，该行为是未定义.
Original:
If the strings overlap, 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.
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[编辑] 。参数。
| dest | - | 。指针指向的字符数组复制。
Original: pointer to the character array to copy to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| src | - | 。复制的字节串的指针。
Original: pointer to the byte string to copy from The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| count | - | 。要复制的字符的最大数量。
Original: maximum number of characters to copy 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() { const char* src = "hi"; char dest[6] = {'a', 'b', 'c', 'd', 'e', 'f'};; std::strncpy(dest, src, 5); std::cout << "The contents of dest are: "; for (char c : dest) { if (c) { std::cout << c << ' '; } else { std::cout << "\\0" << ' '; } } std::cout << '\n'; }
Output:
The contents of dest are: h i \0 \0 \0 f
[编辑] 。另请参阅。
| 一个字符串复制到另一个地方 Original: copies one string 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） | |
| 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） | |
| C documentation for strncpy
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