如何计算作为输出打印的字符数？
问题描述：
有谁知道我如何打印和计数我打印的字符数？
Does anyone know how I can print and count the number of characters that I printed?
说我有一个我正在通过 printf 或 cout 。
Say I have a number I am printing via printf or cout. How could I count the actual number of digits I have printed out?
答
根据 printf man page ，printf返回打印的字符数。
According to the printf man page, printf returns the number of characters printed.
int count = printf("%d", 1000);
如果遇到输出错误，则返回负值。
If an output error is encountered, a negative value is returned.