[C++知识库]c++ 0.01 与 0.01

输入两个double型的数，输出谁大谁小，如果差异小于0.01输出两者相差不大?

#include "../std_lib_facilities.h"


int main()
{
	double ia, ib;
	while (cin>>ia>>ib)
	{
		if (ia < ib) {
			cout << "The smaller value is:" << ia << '\n'
				<< "The larger value is:" << ib << '\n';

			cout << ib - ia << '\n';
			cout << 1.0 / 100 << '\n';
			cout << (ib - ia) - 1.0 / 100 << '\n';
			if (ib - ia < 1.0 / 100)
				cout << "the numbers are almost equal.\n";
		}

		else if (ia > ib) {
			cout << "The smaller value is:" << ib << '\n'
				<< "The larger value is:" << ia << '\n';

			if (ia - ib < 1.0 / 100)
				cout << "the numbers are almost equal\n";
		}
		else
			cout << "the numbers are equal\n";
	}

	
}

输入3.1 3.11

输出为：

The smaller value is:3.1
The larger value is:3.11
0.01
0.01
-2.13371e-16
the numbers are almost equal.?