float.cc

资深C++讲师授课代码

#include <iostream>
using namespace std;

int main()
{
	float f=0.0;
	for(int i=0; i<100; i++)
		f += 0.01;
	cout << "f=" << f << endl;
	float dif=1.0-f;
	if(dif<0.00001&&dif>-0.00001)
		cout << "equal to 1.0" << endl;
	if(f==1.0)
		cout << "==" << endl;
	else
		cout << "!=" << endl;
}