scanf 格式说明符中的星号是什么意思? [英] What does an asterisk in a scanf format specifier mean?

问题描述

所以我偶然发现了这段代码，但我无法弄清楚它的目的是什么，或者它是如何工作的:

So I stumbled across this code and I haven't been able to figure out what the purpose of it is, or how it works:

int word_count;
scanf("%d%*c", &word_count);

我的第一个想法是 %*d 引用了一个 char 指针或禁止 word_count 获取 char变量.

My first thought was that %*d was referencing a char pointer or disallowing word_count from taking char variables.

有人可以解释一下吗?

推荐答案

*c 意思是，一个字符会被读取但不会被赋值，例如对于输入30a"它将 30 分配给 word_count，但 'a' 将被忽略.

*c means, that a char will be read but won't be assigned, for example for the input "30a" it will assign 30 to word_count, but 'a' will be ignored.

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