iconv库:GB2312转UTF-8

/*** gb2312 convert utf-8 ***/
 
#include
#include
#include
#include
 
int convertcode(char *inbuf,int inlen,char *outbuf,int outlen);
 
int main(void)
{
        int len1,len2=20;
      
        char *apin="我爱你";

        len1=strlen(apin);

        char apout[len2];
 
        convertcode(apin,len1,apout,len2);
 
        printf("the utf-8 is %s\n",apout);
 
        return 0;
}
 
int convertcode(char *inbuf,int inlen,char *outbuf,int outlen)
{
        iconv_t handle;
 
        char **pin=&inbuf;
 
        char **pout=&outbuf;
 
        handle=iconv_open("utf-8","gb2312");
 
        if( handle == 0 )
                printf("error!\n");
 
        memset(outbuf,0,outlen);
 
        if(iconv(handle,pin,(size_t *)&inlen,pout,(size_t *)&outlen) == -1){
                printf("iconv error!\n");
                return -1;
        }
 
        iconv_close(handle);
 
        return 0;
}