请教 关于iconv 问题

yibanbano

#include <string.h>
#include <stdlib.h>
#include <iconv.h>
int main()
{
    char inbuf[20]="中福建省运营根";//"汉";
    char in_code;
    char outbuf[20];
    iconv_t cd;
    char *pin = inbuf;
    char *pout= outbuf; ;
    size_t insize=strlen(inbuf),outsize=20,res;
    memset(outbuf,0,outsize);
    cd = iconv_open("gb2312", "unicode");//("ascii","unicode");
    iconv(cd,NULL,NULL,NULL,NULL);
    printf("insize = %d\n outsize = %d\n",insize ,outsize);
    printf("cd = %d\n",cd);
    res = iconv(cd,&pin,&insize,&pout,&outsize);
     if(res == -1)
    {
        printf("error\n");
        return -1;
    }
    printf("unicode = %x\n",pout);
    iconv_close(cd);
    return 0;
}

gcc无错, res 总是等于 -1,请问是iconv的参数有问题还是iconv_open有问题?
很郁闷,不知道问题到底出在哪里?
请指教!

[ 本帖最后由 yibanbano 于 2006-1-23 17:40 编辑 ]