返事の有無を判断する

#include
using namespace std;
int main() {
	char str[100];
	int len = 0;
	bool flag = true;
	cout << "please cin a str" << endl;
	int i = 0;
	str[i] = getchar();
	while (str[i] != '
')
	{
		i++;
		str[i] = getchar();
	}
	len = i - 1;
	for (int j = 0; j < (len / 2); j++)
	{
		if (str[j] != str[len - j])
		{
			flag = false;
			break;
		}
	}
	if (false == flag)
	{
		cout << "    " << endl;
	}
	else
	{
		cout << "   " << endl;
	}
	system("pause");
	return 0;
}