I have to write config info to a file in Linux, while the config info contains Chinese characters.

Instead of using wchar_t,I just using char array, is this correct?

Here is my code :

code in paster.ubuntu

#include 
#include 
#include 
#include 

#define MSG_LEN 4096

int save_config_info(const char *path, char* message)
{
    FILE *fp = NULL;

    fp = fopen(path, "wb");
    if (!fp)
    {
            //print error message
        return -1;
    }

    if (fwrite(message, 1, strlen(message), fp) != strlen(message)) 
        {
        //print error message
        fclose(fp);
        return -1;
    }

    fclose(fp);
    return 0;
}

int main()
{
    //config contain chinese character
    char str[MSG_LEN] = "配置文件中包含中文";
    char path[PATH_MAX] = "example.txt";
    save_config_info(path,str);

    return 0;
}

If the source code encoding is ISO-8859-1, generate the example.txt and using cat to show with some????.

But change the source code encoding with utf-8, everything works well.

My question is:

Is there any elegant way to deal with the Chinese character, since I cannot ensure the source file encoding.

I want the example.txt looks always right.

[root workspace]#file fork.c
fork.c: C source, ASCII text
[root workspace]#gcc -g -o fork fork.c
[root workspace]#
[root workspace]#./fork
[root workspace]#
[root workspace]#
[root workspace]#file example.txt
example.txt: ASCII text, with no line terminators
[root workspace]#
[root workspace]#cat example.txt
?????????[root workspace]#
[root workspace]#
[root workspace]#
[root workspace]#file fork.c
fork.c: C source, UTF-8 Unicode text
[root workspace]#
[root workspace]#gcc -g -o fork fork.c
[root workspace]#./fork
[root workspace]#
[root workspace]#file example.txt
example.txt: UTF-8 Unicode text, with no line terminators
[root workspace]#cat example.txt
配置文件中包含中文[root workspace]#