字符集与编码

http://www.cnblogs.com/KevinYang/archive/2010/06/18/1760597.html

http://blog.csdn.net/gogor/article/details/5323599

http://www.iteye.com/topic/398782

/* convert hex string to str*/

#include <stdio.h>

int main()
{
    unsigned char str[4] ;
    str[0] = 0x41;
    str[1] = 0x42;
    str[2] = 0x43;
    str[3] = '';

    printf("str= %s
", str);

return 0;
}