C++ getline 的兩種用法

getline的兩種聲明

1.標準函數

std::istream &std::getline(std::istream &, std::string &);

2.istream的成員函數

std::istream &std::istream::getline(char *, std::streamsize);

使用示例

#include <iostream>
#include <string>
using namespace std;

#if 0
int main()
{
	string input;
	std::cout << "Please input \"exit\" to quit." << endl;
	std::cout << ">";
	//std::istream &std::getline(std::istream &, std::string &);
	while (getline(cin, input))
	{
		std::cout << input << endl;
		if (_stricmp(input.c_str(), "exit") == 0)
		{
			break;
		}
		else
		{
			std::cout << ">";
		}
	}
	return 0;
}
#else

int main()
{
	char buf[1024] = { 0 };
	std::cout << "Please input \"exit\" to quit." << endl;
	std::cout << ">";
	//std::istream &std::istream::getline(char *, std::streamsize);
	while (cin.getline(buf, sizeof(buf)))
	{
		std::cout << buf << endl;
		if (_stricmp(buf, "exit") == 0)
		{
			break;
		}
		else
		{
			std::cout << ">";
		}
	}
	return 0;
}
#endif