std::basic_fstream::close
void close(); | | |
|---|
关闭关联文件。
有效呼叫rdbuf()->close()如果操作过程中发生错误，setstate(failbit)叫做。
参数
%280%29
返回值
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注记
此函数由Basic的析构函数调用。[医]当流对象超出作用域时，通常不会直接调用fstream。
例
二次
#include <string>
#include <fstream>
#include <iostream>
int main()
{
std::fstream f1("example1", std::ios::out),
f2("example2", std::ios::out),
f3("example3", std::ios::out);
std::cout << std::boolalpha
<< f1.is_open() << '\n'
<< f2.is_open() << '\n'
<< f3.is_open() << '\n';
f1.close();
f2.close();
std::cout << f1.is_open() << '\n'
<< f2.is_open() << '\n'
<< f3.is_open() << '\n';
}二次
可能的产出：
二次
true
true
true
false
false
true二次
另见
is_open | checks if the stream has an associated file (public member function) |
|---|---|
open | opens a file and associates it with the stream (public member function) |
close | flushes the put area buffer and closes the associated file (public member function of std::basic_filebuf) |
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