C/C++ :: Converting Fractions To Decimals And Vice Versa
Aug 1, 2014
I'm working on a Fraction Class assignment where I'm supposed to provide conversion operators to allow Fraction objects to be used in expressions containing float data values. The way I have it now, I'm getting an error that says operator float(const Fraction &) must contain 'void', which makes no sense to me. Lines 155 - 173.
// Fractions CLASS
// Source: Fraction2012.cpp
// Author: Warren H. Knox, Jr.
// Date: 11/8/2012
#include <iostream>
#include <cstdlib>
using namespace std;
class Fraction {
#include <iostream> #include <string> #include <vector> #include <map> const int ENUM_NOT_FOUND = -1; const std::string NEW = " "; enum Day {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday};
[code]....
Ouput with GCC 4.8.1:
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Name a day: Friday day = Friday
But the problem is that whenever I define a new enum, I have to define the << and >> overloads for the new enum again. Isn't there a way to template that as well, so that the << and >> overload needs to be defined just once? My atttempt:
fails to compile. I guess the problem is Enum is not known at compile time, even though it should be deducible during run time? Error mentions ambiguous overload for operator>>.
I was looking for a C++ library for use as stated in the title. I was considering using Voce; however, for the project, I wanted to be able to use a custom voice. For example, in most TTS programs you can pick voices. I wanted to record a custom one. However, I don't really know how these libraries work internally, and since the text to speech is referred to as synthesis, it seems they are created through algorithms rather than recordings. Is there any library which I could use a custom recorded voice with?
I have two form in my project 1st form is FORM1 and 2nd form is FORM2.
FORM1 contain 3 textbox,1 button and FORM2 also contain 3 textbox, 1 button. I want to do....
when user fill FORM1 textboex and click button1 then all entries should be shown on FORM2. and vice versa. I used this code its working very good. when i pass value in form2 textboxes its show on form1 textbox. but i want to do, if textbox of form1 is already fill then form2 textboex should also shws form1 textbox value.
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace punchout { public partial class Form1 : Form
The problem is that I want to write a C++ program that converts an ordinary text file into binary and then reads that binary file and converts it to text file so that this text file equals to first text file. I have wrote this code for it.
int main() { string name1 = "first", name2 = "sec", name3 = "third"; int j = 0, k = 0; ifstream ifs(name1.c_str()); // Here I want to read from the ordinary text file (name1).
[Code] .....
Now what the ofs.write(as_bytes(j), sizeof(int)); or ifs.read(as_bytes(k), sizeof(int)); exactly mean?
In practice, the file name1 contains digit 5 and its size is 1 byte. The name2 contains some character/sign like [] and its size is 4 bytes and name3 contains digit 0 and its size is 1 byte, why? I before have created the name1 file in ordinary text file mode.
My machine is Windows 7 32-bit. My compiler is MVS 2012.
How to convert an ordinary text file into binary and how to convert that binary file back to a text file so that the first text file equals with the last text file?
Is there any standard USB protocol which i can follow to send data to my embedded board(and vice versa). I have no clue on USB programming using c,is there any example code i could follow,
I am trying to make the code below display the result with decimals. I tried using setprecision, but I am not too sure where to put it. I placed it in cout section where the answer is but it still doesn't come out correctly.
#include <iostream> using namespace std; //*Delcare function prototype* int ConvertToCentimeters (double, double ); //declare exception class* class NegativeNumber
I have a task to hold a number like 4.0000000000000000199e+30 and, in a variable like long double (the largest of the data type) doesn't hold the whole number, holds only 4.099e+30, like that.
i recently started programming. i mean I've been exposed to programming for the first time about a week ago. I've been following the tutorial here and playing around with my own code. For some reason, this code works while receiving decimals but not fractions.
Code:
#include <stdio.h> int main() { float kd; float kd_2; printf("Please enter your k/d "); scanf("%f", &kd ); }
which adds two rational numbers in following representation : rNumber := s*(n/d)* 2^e struct rNumber{ _byte_t s; // sign (do not consider for this question) uint n; //numerator uint d;// denominator short e;//exponent }
If the exponents of both numbers are not equal, then they have to be made equal in order to add them. This can be made in 4 ways : increase or decrease the n or d of both numbers.
But if we decrease the denominator of a number (a.d =1) by shifting it for example 1 bit to the right, we get 0 which leads to INFINITY for the fraction. In another case decreasing the numerator would lead the n to be 0 which meanse the whole fraction is then 0.
According to this, in worst case, all 4 cases has to be checked for the right result.
So far the UNDERFLOW of n or d is considered. If we try to increase the value of n or d, then OVERFLOW may also occur.
The very first, intuitive solution would be iteratively increase/decrease one of the terms and to check if the change leads to ZERO or INFINITY.
I'm looking for a library that handles rational, irrational and trascendental numbers and calculates the exact results without approximating values. For example, if I want to calculate:
a = pi; b = 3; c = 2;
I want this library to return the result in this way:
sqrt(b*c)*a == sqrt(6)*pi
instead of
sqrt(b*c)*a == 7.6952989
In case it matters, I'm working on Ubuntu and I compile with g++.
I'm pretty sure a library like that exists because it's too useful, I researched it but couldn't find anything.
I was trying 2 write a program that would calculate the sum notation of 1/(i^2) with the starting number to be 1 and goes up to the nth term. For instance if the user inputed 3 then the sum would look like 1+1/4+1/9. I somehow made a code but it gets weird numbers which some include negative numbers... when I input a number that is above 5.
#include <stdio.h> #include <math.h> int main(int argc, const char * argv[]) { int n; register int i=1; float b;//For part 1
[Code] ....
For some reason I can't edit printf("%f",/>/>; when I post it as the topic so ignore that part cuz Ik its supposed to be written as printf("%f",/>;
I'm trying to compare 2 fractions using operator overloading. The program crashes when this is called;
this is definition: bool operator == (const Fraction& f1, Fraction& f2) { if (f1==f2)return true; else return false; }
this is my calling in the main: Fraction f1, f2; cout<<"Enter in the format: 2/4 or 4/9 "; cout << "enter first fraction: "; f1.Input(); cout << "enter second fraction: "; f2.Input();
Fraction result: result = (f1 == f2);//i think problem lies here. result.Show();
and this is the prototype of the operator: friend bool operator == (const Fraction& f1, Fraction& f2);
I am having a problem with converting a .txt file into a .bin file. It wokrs but only creating a new file and not being able to actually convert it, i have to do this using the fstream functions. I have already created the files in the project file e.g if i type file . file.txt is in the folder.
From my tests I found the problem to be somewhere in the Mantissa part that converts it to binary.
bool xsDLL GetHexFromSF_IEEE754( void* to, Text from, ui08 tSize ) { from.UpperCase(); int db = 0, dB = 0, dBEnd = tSize, dBLast = ( tSize - 1u ), dbEnd = dBEnd * 8; ui08 *data = reinterpret_cast< ui08* >( to ); for ( ; dB >= 0; --dB ) data[ dB ] = 0u;
[Code] ....
Adjustments made, still having problems though. After finding a more useful resource [URL] ..... I got the function looking more like it should but am still having problems...
