空符
- 网络invisible symbol
空符-
空符的建立及审美价值
Building of Invisible Symbol & Aesthetic Value
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当被告知输出不超过n个字节时，snprintf保证会创建一个长度不超过n-1的字符串，字符串最后是一个空结束符。
When told to print no more than n bytes , snprintf guarantees that it creates a string of length no more than n-1 , with a null terminator at the end of the string .
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还是有效的，但不是以空终止符结尾，而是它向文件写入需要的字节数。
Writeis also available , but rather than terminating on a null character , it writes the requested number of bytes to the file .
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选择为空数据保留分隔符的行为。
Select the behavior of preserving delimiter for empty data .
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字符“。”匹配除空字符和换行符之外的任一单个字符。
The dot character " . " matches any single character except null character and newline character .