error: 'FILE' undeclared (first use in this function)

最新推荐文章于 2024-09-03 18:19:42 发布

原创最新推荐文章于 2024-09-03 18:19:42 发布 · 1.3w 阅读

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#function #file #fp

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本文介绍了一个常见的编程问题，即在使用C/C++语言进行文件操作时遇到的FILE未声明错误。通过一个具体的例子展示了如何通过包含正确的头文件<stdio.h>来解决此问题。

error: 'FILE' undeclared (first use in this function)

今天在打trace调试底层代码的时候添加：

{
	FILE* fp = fopen("/sdcard/gaomatrix.txt","a+");
	if(fp)
	{
	    fprintf(fp, "XXE_RefMode_A1 \n");
	    fclose(fp);
	}
}

原来是少添加了：#include <stdio.h>

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