如何计算作为输出打印的字符数？ [英] How can I count the number of characters that are printed as output?

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?

推荐答案

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.

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