如何修复 C 错误 'stderr undeclared'

问题：

你有类似这样的 C 代码

main.c

fprintf(stderr, "test");

fprintf(stderr, "test");

但当你尝试编译它时，你看到类似这样的错误消息

error_message.txt

/home/uli/myproject/main.c:9:25: error: ‘stderr’ undeclared (first use in this function)
                 fprintf(stderr, "test");

/home/uli/myproject/main.c:9:25: error: ‘stderr’ undeclared (first use in this function)
                 fprintf(stderr, "test");

添加

stdio_include.c

#include <stdio.h>

#include <stdio.h>

在错误发生的源文件顶部。包含 stdio.h 将包含 printf、fprintf、stdin、stdout 和 stderr 等符号。

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