从void函数对offile的流引用 [英] ofstream refference to an outfile from a void function

问题描述

我想知道我在这里做错了什么。我正在尝试通过void函数对ofstream进行引用并写入我的outfile 

Hi, I want to know what I'm doing wrong here. I'm trying to make a reference to the ofstream and write to my outfile through a void function 

void border(ofstream& outfile2);



int main()

{

ofstream outfile2;
	ifstream infile;
	infile.open("prog4.txt"); //opens the data fike
	outfile2.open("outfile.txt");

border(a)

}

void border(fstream& outfile2) {
	outfile << "@@@@@@ test @@@@@@\n";
	return;
}

我没有得到任何我的outfile上的输出

Im not getting any output on my outfile

推荐答案

在11/20/2016 10:57 PM，bluezapfusion写道：

On 11/20/2016 10:57 PM, bluezapfusion wrote:

[code]

void border（ofstream& outfile2）;

[code]
void border(ofstream& outfile2);

int main （）$
{

int main()
{

ofstream outfile2;

  ifstream infile;

  infile.open（QUOT; prog4.txt"）; //打开数据fike

  outfile2.open（" outfile.txt"）;

ofstream outfile2;
  ifstream infile;
  infile.open("prog4.txt"); //opens the data fike
  outfile2.open("outfile.txt");

border（a）

什么是"a"，以及如何与infile或outfile2相关？

What's "a", and how, if at all, is it related to infile or outfile2?

此外，这一行缺少分号。

Also, this line is missing a semicolon.

void border（fstream& outfile2）{

  outfile<< " @@@@@@ test @@@@@@ \ n";

void border(fstream& outfile2) {
  outfile << "@@@@@@ test @@@@@@\n";

什么是outfile，以及如果有的话它与outfile2有关吗？

What's outfile, and how, if at all, is it related to outfile2?

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