多维数组和传输缓冲区 [英] multidimensional arrays and transferring buffers

问题描述

我想保存到缓冲区1800个字符数组段。当过我能够缓冲了转移，但是当我试图打印出每一个新的缓冲区。我得到空的输出。我究竟做错了什么？

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编辑 - 我改变了循环到这对空端接添加到第二尺寸的末端。现在输出告诉我，这是空。但的printf（％C）表示，数据已经转移。

 而（buf_pos＆LT; msg_size + 1）{
    如果（buf_pos％1800 == 0）{
        msg_buff [KEY_NUM] [cbuf_pos] ='\\ 0';
        KEY_NUM ++;
        cbuf_pos = 0;
        msg_buff [KEY_NUM] [cbuf_pos] = BUF [buf_pos]
    }其他
        msg_buff [KEY_NUM] [cbuf_pos] = BUF [buf_pos]    的printf（％C，msg_buff [KEY_NUM] [cbuf_pos]）;
    cbuf_pos ++;
    buf_pos ++;
}
 

解决方案

你在哪里递增 cbuf_pos ，分配给时msg_buff ？此外，在如果（buf_pos％1800 == 0）终止 msg_buff [KEY_NUM] [cbuf_pos] 与一个'\\ 0'（检查到有一个或多个字符左）。

I am trying to save a buffer into array segments of 1800 characters. When ever I am able to transfer the buffer over but when I try to print each new buffer out. I get null for the output. What exactly am I doing wrong?

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EDIT - I changed the loop to this to add null terminations to the end of the 2nd dimension. now the output tell me it is null. But printf("%c") says the data has been transferred.

while(buf_pos < msg_size+1){
    if(buf_pos % 1800 == 0){
        msg_buff[key_num][cbuf_pos]='\0';
        key_num++;
        cbuf_pos=0;
        msg_buff[key_num][cbuf_pos]=buf[buf_pos];
    }else
        msg_buff[key_num][cbuf_pos]=buf[buf_pos];

    printf("%c",msg_buff[key_num][cbuf_pos]);
    cbuf_pos++;
    buf_pos++;
}

解决方案

Where are you incrementing the cbuf_pos, when assigning to the msg_buff? Also, in the if(buf_pos % 1800 ==0), terminate the msg_buff[key_num][cbuf_pos] with a '\0' (checking that there is one more character left).

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