c++ error: newline in constant (Chinese encoding issue)

In C++, constants cannot contain newline characters. If a constant includes a newline character, it will result in a compilation error.

Constants are values that remain fixed and cannot be changed once defined. A newline character is a special character that signifies a line break and is typically represented as “\n” in strings. If you include a newline character in a constant, the compiler will consider your constant definition incomplete and result in a compilation error.

To solve this problem, you can replace line breaks with spaces or other characters, or define constants as multiline strings. For example:

const char* str = "Hello, "
                  "world!";

This definition is a multiline string constant where the compiler will automatically ignore line breaks.