Cracking The Coding Interview5.2

//Given a (decimal - e.g. 3.72) number that is passed in as a string, print the binary representation.If the number can not be represented accurately in binary, print “ERROR”.

//前面有个打印整数的了，这里只打印小数.

#include <iostream>

#include <vector>

#include <string>

#include <stdlib.h>

using namespace std;

void print(int p)

{

	vector<int> v;

	for (int k = 0;k<32; k++)

	{

		int t = p&1;

		v.push_back(t);

		p=p>>1;

	}

	for (int i = v.size()-1;i>-1; i--)

	{

		cout<<v[i]<<" ";

	}

	cout<<endl;

}

void mprintf(float f)

{

	vector <int>v;

	for (int k = 0; k<32; k++)

	{

		f = f *2;

		if (f>=1)

		{

			f = f-1.0;

			v.push_back(1);

		}

		else v.push_back(0);

		cout<<v[k]<<" ";

	}

}

int main()

{

	string str = "0.8";

	float f = atof(str.c_str());

	mprintf(f);

	return 0;

}