错误：格式未知的转换类型字符“ l”-长扫描长 [英] error: unknown conversion type character 'l' in format - scanning long long

问题描述

我正尝试使用标准IO功能 scanf 从控制台获取长。我从％lld 开始：

I'm trying to get long long from the console using standard IO function scanf. I started with %lld:

scanf("%lld", &rule);

该抛出：

error: unknown conversion type character 'l' in format [-Werror=format=]

的未知转换类型字符 l

我发现了更多解决方法，但它们也引发了错误：

I've found more workarounds, but they too throw errors:

 scanf("%I64d", &rule);
   ->error: ISO C does not support the 'I64' ms_scanf length modifier [-Werror=format=]
 scanf("%"SCNd64"", &rule);
   ->error: expected ')' before 'SCNd64'

我在做什么错误？还有另一把戏吗？

Am I doing something wrong? Is there an another trick?

我正在使用以下标志对MinGw GCC的最新版本进行编译： -pedantic -Wall -Werror -std = c99 -g -D HOME = 1

I'm compiling on very recent version of MinGw GCC with these flags: -pedantic -Wall -Werror -std=c99 -g -D HOME=1

推荐答案

用于 SCNd64 和类似的东西，您必须使用

for SCNd64 and similar, you'd have to use

#include <inttypes.h>

但这一切仅在编译器支持C99的情况下才有效。您的第一条错误消息强烈表明它没有，或者您没有提供正确的命令行开关。

but all of this is only supposed to work if your compiler supports C99. Your first error message is a strong indication that it doesn't, or that you didn't give the right commandline switches.

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