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;
}