c语言控制汉字输入的函数

int chinese_putstring(char acbuf[100], int iMaxLen)
{
    char ch1,ch;
    int i=0;
    while((ch=getch())!=13)
    {   
        if(ch==8)
        {
            if(i!=0)
            {
                putchar('\b');
                putchar('\b');
                putchar(' ');
                putchar(' ');
                putchar('\b');
                putchar('\b');
                acbuf[i--]='\0';
                acbuf[i--]='\0';
            }
        }
        if (i<iMaxLen)
        {
            if (ch&0x80)
            {
                acbuf[i++]=ch;
                ch1=getch();
                if (ch1&0x80)
                {
                    acbuf[i++]=ch1;
                }
                putchar(ch);
                putchar(ch1);
               
            }
        }
    }
     return  0;
}
哪里错了。打出来的字不一样

[此贴子已经被作者于2017-7-25 09:45编辑过]