const——error: variably modified ‘buf’ at file scope
来源:互联网 发布:网络电视直播哪个好 编辑:程序博客网 时间:2024/05/29 14:59
const变量在C和C++之中还是有不少区别的。在C中,const修饰的变量一般只当成“只读的”,而不是将其作为一个常量。因此如果像下面这样声明
const int SIZE; // legal in C
不过在C++中,const修饰的变量都是常量,这和直接使用0,1,2...以及字符串”open file error!“一样,所以在声明的时候都需要赋值。
如果只是这样声明
const int SIZE; //illegal in C++是错误的。必须这样声明:
const int SIZE = 100; //legal in C++
由于const修饰的变量在C中不能直接当成常量,所以如果在全局声明数组,不能使用const变量做下标。比如
const int SIZE = 100;char buf[SIZE]; // illegal in C, but legal in C++
如果在C语言这样用就会报错——error: variably modified ‘buf’ at file scope。但是如果在C++中由于SIZE会当成常量存储在堆栈特殊的位置,所以可以正确使用。
0 0
- const——error: variably modified ‘buf’ at file scope
- 错误信息 error: variably modified 'buf' at file scope char buf[bufsize];
- error: variably modified 'table' at file scope
- Variably modified array at file scope
- Variably modified array at file scope
- Variably modified array at file scope
- Variably modified array at file scope
- Variably modified array at file scope
- variably modified 'a' at file scope 之减治法---假币问题
- C : stack memory, goto and “jump into scope of identifier with variably modified type”,
- error C2449: found '{' at file scope (missing function header?)和error C2059: syntax error : '}'
- Apple LLVM compiler 3.0 error file".h" has been modified.....
- fatal error: file has been modified since the precompiled header
- fatal error: file has been modified since the precompiled header
- swift:Declaration is only valid at file scope问题解决
- setbuf(FILE *stream, char *buf);
- error C2199: syntax error : found 'int (' at global scope (was a declaration intended?)
- error C2598: linkage specification must be at global scope 一个意外
- trunk使用注意事项
- 横向ListView的自动滚动
- nginx+tomcat集群配置
- 谈谈心声---科技行业的未来五年
- pilot study cell segmentation line display issue
- const——error: variably modified ‘buf’ at file scope
- PhpStorm 默认快捷键
- 软件破解中常用API
- 又一道软通动力7K月薪面试题——银行业务调度系统
- java heap space eclipse
- android AsyncTask介绍
- Linux script: 找到匹配文件删除并重新下载...
- 复制(克隆)二:ghost功能---磁盘克隆、分区(u盘)克隆、gho系统安装
- 第十二周模板