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std::fclose

性病：：

Defined in header ​​
int fclose( std::FILE* stream ​​

关闭给定的文件流。任何未写入的缓冲数据都会被刷新到操作系统。任何未读取的缓冲数据都会被丢弃。

无论操作成功与否，流都不再与文件相关联，而缓冲区将由std::setbuf或std::setvbuf，如果有的话，如果使用自动分配，也会被取消关联和解除分配。

如果指针的值为stream后用fclose退货。

参数

stream-the file stream to close

返回值

​0​在成功的时候，EOF否则。

例

二次

#include <cstdio>
#include <cstdlib>
 
int main()
{
    FILE* fp = std::fopen("test.txt", "r"
    if(!fp) {
        std::perror("File opening failed"
        return EXIT_FAILURE;
    }
 
    int c; // note: int, not char, required to handle EOF
    while ((c = std::fgetc(fp)) != EOF) { // standard C I/O file reading loop
       std::putchar(c
    }
 
    if (std::ferror(fp))
        std::puts("I/O error when reading"
    else if (std::feof(fp))
        std::puts("End of file reached successfully"
 
    std::fclose(fp
}

二次

另见

fopenopens a file (function)
freopenopen an existing stream with a different name (function)
closeflushes the put area buffer and closes the associated file (public member function of std::basic_filebuf)

c FCLOSE文件

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