fmod giving "bad" output
i am writing a constructor for my fraction class that will convert a decimal value into a fraction.
in order to do this i am using fmod to count how many digits there are after the decimal. however, it never reaches 0 even though it should.
this is my test code to demonstrate the problem:
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//#include "fraction.h"
#include <cmath>
#include <iostream>
using namespace std;
int main()
{
double Value = 1.25;
double i = 1.0;
for (int j =0 ; j<5 ; j++)
{
//cout<<Value<<"/"<<i<<"="<<Value/i<<endl;
cout<<fmod(Value,i)<<endl;
i = i *0.1;
}
}//end main
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my output is:
0.25
0.05
0.01
0.001
0.0001
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could someone explain why i am getting a result of 0.01 instead of 0?
or even o.05 which should be 0.5
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