-qlocale

In z/OS® XL C/C++, the -qlocale option specifies the locale to be used by the compiler as the current locale throughout the compilation unit. With the -qlocale compiler option, you can specify the locale you want to use. When the -qnolocale compiler option is in effect, the compiler uses the default code page, which is IBM-1047.

Open XL C/C++ for z/OS determines the code page of each source file and header file automatically from the file tag associated with the file. To change the file tag information, use the chtag command.