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std::putc

STD：：fputc，std：：putc

Defined in header ​​
int fputc( int ch, std::FILE* stream int putc( int ch, std::FILE* stream ​​

写字符ch到给定的输出流。stream...

在内部，字符被转换为unsigned char就在被写出来之前。

在C中，putc()可以作为宏实现，在C++中是不允许的。因此调用std::fputc()和std::putc()总是有同样的效果。

参数

ch-character to be written
stream-output stream

返回值

成功后，返回书写的字符。

失败时，返回EOF并设置误差指标%28见std::ferror()29%stream...

例

二次

#include <cstdio>
 
int main()
{
    for (char c = 'a'; c != 'z'; c++)
        std::putc(c, stdout
    std::putc('\n', stdout
 
    // putchar return value is not equal to the argument
    int r = 0x1070;
    std::printf("\n0x%x\n", r
    r = std::putchar(r
    std::printf("\n0x%x\n", r
}

二次

产出：

二次

abcdefghijklmnopqrstuvwxy
0x1070
p
0x70

二次

另见

putcharwrites a character to stdout (function)

c fputc，putc的文档

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