‘system’ was not declared in this scope

如果你在编译C++程序时遇到 "'system' was not declared in this scope" 的错误，可以尝试包含头文件 `<cstdlib>`。

在你的C++程序中加入以下头文件：

#include <cstdlib>

这样就可以使用 `system` 函数了。

相关问题

system was not declared in this scope

这个错误提示是说在当前的作用域中没有声明system这个变量或函数。可能是因为你没有包含相应的头文件或库文件，或者是因为你的代码中有语法错误导致编译器无法识别system。建议检查一下代码中是否有拼写错误或语法错误，并确认是否包含了需要的头文件或库文件。

‘rmdir’ was not declared in this scope

This error message typically occurs in computer programming when the command 'rmdir' is used in a program and the compiler or interpreter cannot find the definition of the command.

To resolve this issue, you need to ensure that the necessary header files or libraries are included in your program. The 'rmdir' command is typically defined in the <dirent.h> header file in C programming.

Make sure that you have included this header file in your program using the #include directive. Additionally, if you are using a different programming language or operating system, the command may be defined differently or may not be available.

Check the documentation for your programming language or operating system to determine the appropriate command for deleting directories.