我的输入文件中没有读取C ++空格？

Question

Input txt file:

Joe Smith
Mary Jones
Hamid Namdar

Desired Output Txt file:

Smith Joe
Jones Mary
Namdar Hamid

Output file I receive:

SmitJoeJonesMaryNamdarHamid

#include <iostream>
#include <string>
#include <fstream>

using namespace std;

int main()
{
	ofstream output;
	ifstream input;
	string firstname, lastname;

	output.open("LastName.txt");
	input.open("FirstName.txt");

	cout << "Processing Data..." << endl;

	input >> firstname >> lastname;

	cout << firstname << lastname << endl;

	output << lastname << firstname;

	cout << lastname << firstname << endl;

	input >> firstname >> lastname;

	cout << firstname << lastname << endl;

	output << lastname << firstname;

	cout << lastname << firstname << endl;

	input >> firstname >> lastname;

	cout << firstname << lastname << endl;

	output << lastname << firstname;

	cout << lastname << firstname << endl;


	input.close();
	output.close();

	cin.get();
	cin.get();

	return 0;

}

我的程序需要在名称之间留有空格，即使文本文档中有空格，也不会读取空格。有没有人知道我应该怎么做以便阅读空格？

Answer 1

我猜你想在输出中看到空格，但你没有得到它们。这让你觉得空间没有被阅读。事实是，正在读取空白区域，但在使用时会被丢弃：

input >> firstname >> lastname;

您需要将创建输出的行更改为：

cout << firstname << " " << lastname << endl;
output << lastname << " " << firstname << endl;