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std::swap(std::basic_istringstream)
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std::putchar

STD：：putchar

Defined in header ​​
int putchar( int ch ​​

写字符ch到stdout在内部，字符被转换为unsigned char就在被写出来之前。

相当于putc(ch, stdout)...

参数

ch-character to be written

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ferror()29%stdout...

例

二次

#include <cstdio>
 
int main()
{
    for (char c = 'a'; c != 'z'; c++)
        std::putchar(c
    std::putchar('\n'
 
    // 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

fputcputcwrites a character to a file stream (function)

C.putchar文件

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