Compiling /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c:2:1: error: unknown type name 'using' using namespace std; ^ /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c:2:16: error: expected ';' after top level declarator using namespace std; ^ ; /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c:47:7: error: use of undeclared identifier 'cout' cout<<a[i][j]<<' '; ^ /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c:49:5: error: use of undeclared identifier 'cout' cout<<endl; ^ /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c:49:11: error: use of undeclared identifier 'endl' cout<<endl; ^ 5 errors generated. Run command failed with status: 1
时间: 2024-04-28 18:19:53 浏览: 19
这是一个编译错误,错误信息显示在文件 /var/mobile/Containers/Data/Application/0DF96638-1699-47C9-97C7-7DED37CBC905/Documents/1.c 中,共有 5 个错误。第一个错误是未知的类型名称 'using',这通常是因为没有包含所需的头文件。第二个错误是在顶层声明符后需要分号。第三个和第四个错误是使用了未声明的变量 'cout' 和 'endl',这是因为没有包含所需的头文件。最后一个错误是生成失败,状态为 1。你需要检查代码中的头文件和变量声明是否正确,并确保代码编译成功。
相关问题
usr/bin/ld: cannot find -lxxx
This error message typically occurs when the linker (ld) is unable to find a library (-lxxx) that is required for the compilation of a program.
The most common causes of this error are:
1. The library is not installed on your system or is installed in a non-standard location. You can check if the library is installed by running the command "ldconfig -p | grep xxx" (replace xxx with the name of the library).
2. The library is installed, but the linker is not able to find it. In this case, you can add the path to the library to the LD_LIBRARY_PATH environment variable by running "export LD_LIBRARY_PATH=/path/to/library:$LD_LIBRARY_PATH" (replace /path/to/library with the actual path to the library).
3. The library is not compatible with your system architecture. Make sure that the library you are trying to link against is compiled for the same architecture as your system.
4. The library may be named differently than what you are expecting. Check the library's documentation or the headers of the code you are trying to compile to make sure that you are using the correct library name.
Once you have resolved the issue, you can try compiling your program again.
/usr/bin/ld: cannot find -lcommon
This error message indicates that the linker (ld) is unable to find the library file named "libcommon.a" or "libcommon.so" that is needed to link the executable.
To resolve this error, you need to ensure that the library is installed and in the search path of the linker. Here are some things you can try:
1. Check if the library is installed: Use your package manager to search for the library and install it if it is not already installed. For example, if you are using Ubuntu or Debian, you can use the command "sudo apt-get install libcommon-dev" to install the library.
2. Check the library search path: Make sure that the directory where the library is installed is included in the linker's search path. You can do this by adding the directory to the LD_LIBRARY_PATH environment variable, or by specifying it with the -L option when compiling or linking.
3. Check the library name: Double-check that the library name is correct and matches the name used in the linker command. If necessary, you can rename the library file to match the expected name.
Once you have resolved the issue, try compiling and linking your program again.