#include <iostream>
    #include <sstream>
    #include <math.h>
    using namespace std;
    
    int GetDecimalsUsingString( float number );
    int GetDecimals( float number, int num_decimals );
    
    int main() {
    	float x = -1234.5678;
        int x1 = (int) x;   // which would return 1234 great.
        float remainder = x - static_cast< float > ( x1 );
        std::cout << "Original : " << x << std::endl;
        std::cout << "Before comma : " << x1 << std::endl;
        std::cout << "Remainder : " << remainder << std::endl;
        
        // "Ugly" way using std::stringstream and std::string
        int res_string = GetDecimalsUsingString( remainder );
        
        // Nicer, but requires that you specify number of decimals
        int res_num_decimals = GetDecimals( remainder, 6 );
        
        std::cout << "Result using string : " << res_string << std::endl;
        std::cout << "Result using known number of decimals : " << res_num_decimals << std::endl;
    	return 0;
    }
    
    int GetDecimalsUsingString( float number )
    {
    	// Put number in a stringstream
    	std::stringstream ss;
        ss << number;
        
        // Put content of stringstream into a string
        std::string str = ss.str();
        
        // Remove the first part of the string ( minus symbol, 0 and decimal point)
        if ( number < 0.0 )
            str = str.substr( 3, str.length() - 1);
        else
            str = str.substr( 2, str.length() - 1);
           
        // Convert string back to int
        int ret =  std::strtol( str.c_str(), NULL, 10 );
         
        /// Preserve sign
        if ( number < 0 )
        	ret *= -1;
        
        return ret;
    }
    int GetDecimals( float number, int num_decimals )
    {
    	int decimal_multiplier = pow( 10, num_decimals );
    	int result = number *  decimal_multiplier;
    	
    	return result;
    }