将CRC数据写入.txt文件

Question

这似乎应该是一个基本的C++过程,但我不熟悉数据输出.

当我打印数据而不输出到文本文件时,我得到正确的值.

example: 00150017000 181

打印到文本文件时,这是我得到的:

11161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116111611161116

这是我的代码:

ofstream myfile;
myfile.open("C:\\CRC.txt");
for (i = 0; i < 200; i++, id++)
{
    myfile << sprintf(idstring, "%011d", id);
    myfile << printf("%s %03d\n", idstring, computeCrc(idstring));
}
myfile.close();

其他一切正常,我知道CRC生成正确.只需获得正确的输出.

通过将"> CRC.txt"添加到调试属性命令参数,我能够将控制台屏幕输出到文本文件,但我只是想知道如何将ofstream方法合并到此中.

提前致谢.

Answer 1

您不会将您认为保存的内容保存到文件中.首先保存sprintf()函数的结果,在你的情况下为11.然后你保存printf()函数的结果,在你的情况下是11 + 1(空格)+ 3 + 1(\n)= 16.所以结果是200时间1116.

你想做什么

char tempBuf[12];
ofstream myfile;
myfile.open("C:\\CRC.txt");
for (i = 0; i < 200; i++, id++)
{
    sprintf(tempBuf, "%011d", id);
    myfile << tempBuf << ' ';        
    sprintf(tempBuf, "%03d", computeCrc(tempBuf));
    myFile << tempBuf << '\n';
}
myfile.close();