C++ :: How To Give Fraction Object In S String Via Template
May 9, 2014I am trying to give fraction object in s string via template.
struct Fr // simple Fraction {
int num;
int denom;
Fr(int i,int j) {
[Code] ....
ADVERTISEMENT
C/C++ :: Fraction Calculator - Converting From Fraction To String
May 27, 2014I'm having a problem when i convert from fraction to string. When I run my program it runs fine I'm supposed to get an output of the fraction ex (2/5) and the decimal 0.4 the problem is that it does not output the fraction all I get it / and 0.4
the code for converting from fraction to string is the following
std::string string;
char numerator[100]/* = {0}*/;
char denominator[100]/* = {0}*/;
_itoa_s(numerator_, numerator, 10);
_itoa_s(denominator_, denominator, 10);
[Code] .....
C++ :: Declare Template Type Object Inside Template Type Class Definition
Oct 12, 2013Let me put it into the code snippet:
/**
This class build the singleton design pattern.
Here you have full control over construction and deconstruction of the object.
*/
template<class T>
class Singleton
[Code]....
I am getting error at the assertion points when i call to the class as follows:
osgOpenCL::Context *cxt = osgOpenCL::Singleton<osgOpenCL::Context>::getPtr();
I tried commenting assertion statements and then the debugger just exits at the point where getPtr() is called.
C/C++ :: How To Give Validation For Character String
Aug 26, 2013If i have character string 'char name[30]' how to give validation for the name entered by user?
View 4 Replies View RelatedC++ :: Create Object Of Unsigned Template?
Jul 17, 2014template<class T>
void function ( T item )
{
unsigned T willThisWork; // <--
}
Visual Studio compiles it, but will it actually do what I want? I do know that T is is a signed integer, I just don't know what size of integer.
C++ :: Initializing Static Field As A Template Object
Aug 26, 2014I need a static hash table to keep track of all objects of a particular type that are instantiated in a Qt application but I have never used a template class as a static member object before and I can't seem to figure out how to initialize it. QHash is the hash table class that follows the template convetion:
template<class key, class data>
QString is probably self explanatory.
Example Header:
class MyClass {
...
private:
static QHash<QString, MyClass*> instanceTable;
}
Here is my source that doesn't compile.
Example Source
#include header.h
// using default constructor for table...
QHash<QString key, MyClass* instance> MyClass::instanceTable(); // gives Error below.
// Error in above line is "Declaration is incompatible with QHash<QString, Myclass*>"
I have tried doing it a number of different ways and none of them work. How do you initialize a static template object?
C++ :: Template Specialization Does Not Work For User-defined Object
May 23, 2014Can you take a look why I am getting compile error.
Code:
// clang++ main.cpp -g -std=c++11 -o main
#include <iostream>
class QuoteClass {
public:
QuoteClass() = default;
QuoteClass(std::string param) {symbol = param;}
std::string get_symbol() {return symbol;}
[Code] ....
C/C++ :: Template Class Function Taking A Derived And Generic Object
Feb 23, 2014I'm trying to write a function for receiving messages, so my classes can communicate with each other. The only issue I get is a compile error asking me to define the base parameter as one of the derived instances. I tried using a void* to fill the need, but then I lose the initial type, which I need to check for. How might I go about writing a generic object for this?
Here's my code:
template<class Object>
class State
{
public:
[Code].....
Should I just have all of the objects inherit in the order of Object >> GenericObject >> DerivedObject?
C++ :: Template Class - Convert String To T
May 23, 2013I have encountered a problem with template class. I have made a template class that converts a value into a string, and then made another template class that converts string to T if its possible. Now I need to overload >> and << operators for type T.
template<typename T>
string toString (const T &value) // convert a value into a string {
ostringstream os;
//os << value;
return os.str();
[Code] ....
C/C++ :: Cannot Output A String From A Class Template
Dec 8, 2014I have been trying to get this my class template to print out a string for me, however I am getting :
" error C679 ' No operator found which takes a right hand operand of type std:: string' "
I have tried various way to get this going however I cant get past this error. I understand that templates functions how ever i am not sure why i am not getting my string to be displayed.
#include <iostream>
#include <string.h>
using namespace std;
template<class T>
class BinaryTree {
struct Node {
[code].....
C/C++ :: Converting A Fraction To Decimal?
Apr 28, 2015i am having issues converting a fraction to a decimal, i think the code would go in the istream because it is working with input data but i just cant figure it out.
#include <cstdio>
#include <string>
#include <iostream>
using namespace std;
[Code].....
C++ :: Get Fraction For Any Decimal Number In Variable?
Jun 9, 2013How do i get the fraction for any decimal number in a variable?
Code: Code: #include<iostream>
using namespace std;
int main()
{
double x = 1/6;
cout << x;
cin.get();
}
C++ :: Writing A Function That Compares Two Fraction?
Dec 25, 2014I'm writing a function that compares two fraction. if the fractions are equal it returns 0. If the fraction in the first parameter is less than the fraction in the second parameter it returns a negative number. Otherwise it returns a positive number. in doing so convert the fraction to a floating point number.
completing the function to run
typedef struct fracion
{
int numo;
int denom;
}fraction;
[Code].....
C++ :: Static Constant Datatype For Fraction Class
Aug 4, 2013My Fraction.h class looks like :
class Fraction {
int num;
unsigned int den;
public:
Fraction(int = 1,int =1);
//Constants of Datatype
[Code] ....
The implementation Fraction.cpp is as follows :
#include "Fraction.h"
Fraction::Fraction(int n, int d):num(n),den(d){
cout << This is double param constructor <<endl;
}
And the application main.cpp is
int main(){
Fraction f1(3,9);
f1 = Fraction::sc_fUnity; // how to implement this ?
}
How can I write the Fraction.cpp for the constant static member ?
C++ :: Create A Program That Calculates Fraction Of Time?
Dec 16, 2013I am trying to create a program that calculates fraction of time remaining when a student leaves during the middle of the semester. I have to use function files here. I am having trouble with the division in function long double tuitionfrac(int, int, int). No matter what numbers are entered, fractime gives an output of 0. I don't understand that.
long double tuitionfrac(int opening, int leaving, int semend)
{
int lefttime = semend - leaving;
cout << "Left time " << lefttime << endl; //for error checking
int tottime = semend - opening + 1;
cout << "Total time " << tottime << endl;
long double fractime = lefttime/tottime;
cout << "fractional time " << fractime << endl; //always returns as 0.
return fractime;
}
C++ :: Fraction Class - Warning Converting To Int From Double
Jul 28, 2013I am trying to write a Fraction class and getting the following warning when compiling my code :
Fraction.cpp: In constructor 'Fraction::Fraction(double)':
Fraction.cpp:8: warning :converting to 'int' from 'double'
My Fraction.cpp class looks like :
#include "Fraction.h"
Fraction::Fraction(int n, int d):num(n),den(d) {
cout << This is double param constructor <<endl;
}
Fraction::Fraction(double d):num(d),den(0)
[Code] ....
How can I get rid of the warning ?
Visual C++ :: Class Fraction - Overloading Operators
Sep 25, 2013the question am having problems with..
1.Write a class function that defines adding, subtracting, multiplying and dividing fractions by overloading standard operators for the operations.
2. Write a function member for reducing factors and overload I/O operators to input and output fractions. how would i set this up?
Visual C++ :: Structures Function - Comparing Two Fraction
Nov 5, 2014I'm writing a function that compares two fraction. if the fractions are equal it returns 0. If the fraction in the first parameter is less than the fraction in the second parameter it returns a negative number. Otherwise it returns a positive number. in doing so convert the fraction to a floating point number.
typedef struct fracion {
int numo;
int denom;
}fraction;
int compareFractions (fracion, fraction);
[Code] ....
C/C++ :: Length Of String Object?
May 7, 2014consider the following code:
string input;
getline( std::cin, input )
In the code above, what is the maximum number of characters that can be read into variable input?
C++ :: Implementation Of Array Index Operator For Fraction Class
Jan 7, 2014I need an implementation for the array index operator overloading of my Fraction class . The Fraction.h looks like :
#include <iostream>
using namespace std;
class Fraction {
public:
Fraction(int = 1, int = 1);
[Code] .....
I am not able write the Array index operator overloading functions.
C++ :: How To Use A String To Create Class Object
Dec 24, 2014I wanted to create a new class object and I want to name it from a string. Something like this:
string name = "Mike";
Customers name;
//to create a new object in customer class using the name string
Is there any way to do this?
C++ :: Deleting A String Object In Vector?
Sep 21, 2013Here's my code so far:
case DELETE_TITLE:
std::cout << "Game to remove from list: ";
std::cin.ignore();
getline(std::cin, gameTitle);
for (iter = gameList.begin(); iter != gameList.end(); ++iter) {
[code]....
It deletes the text from the string but not the index it self.
It deletes the text but when I print the list of game titles it has it there blank. I want it to completely remove the object from the vector from where it was deleted
C++ :: program That Reads Into String Object A Name With Three Blanks Between First And Last Names
Oct 4, 2014" Write a program that reads into a string object a name with three blanks between the first and last names. Then extract the first and last names and store them in separate string objects. Write a function subprogram that displays its string argument two times. Call this function display the first name for times and then to display the last name six times."
I completed coding the first part of this task with the strings and combining strings together. However, i have having trouble with the other half of this task. It begins from "Write a function subprogram to display the last name six times." This is where i have so far --
#include <iostream>
#include <string>
using namespace std;
int main()
{
// Defining the strings
string firstname, lastname;
string wholename;
string greet = " Hi ";
[code]....
C++ :: Display Fraction In Proper From Based On 2 Arguments Passed To Class Member Function
Mar 15, 2015We're assigned a project working with classes and fractions. My goal is to display a fraction in proper from based on 2 arguments passed to a class member function proper();
My strategy was to utilize the greatest common factor between the 2 arguements, then divide both the numerator and denominator by that number and then it would display.
The program actually runs, but only seems to divide the numerator and not the denominator. This in return makes my other class member functions have incorrect comparisons and sums.
Code:
#include<iostream>
#include<conio.h>
class Fraction {
friend void compare(Fraction a, Fraction b);
friend void sum(Fraction a, Fraction b);
[Code] ....
C++ :: How To Assign Char Array As User Defined String Object
Apr 17, 2014STRING s1 = “FOOBAR”
Here STRING is a user defined class. how to assign a constant char array "FOOBAR" to string object? Copy constructor need to be same class type as parameter. and overloading assignment operator also need to be same class type. I think 'friend' can let pass another type of object rather than STRING to do operation on overloaded '=' operator. How could it be done if it is possible at all?
C++ :: String Stream Object And Text File Data Access
Jan 21, 2014I have two puzzling issues I am dealing with.
Issue 1: I am using a stringstream object in a block of my program that needs to be visited repeatedly depending on a user's selection from a menu. I want the contents of this stringstream object to be cleared any time control gets to this part of the program. I have tried the clear and flush functions to no avail.
Issue 2: I am reading data from a source text file that would be regularly changed during the course of program run. After the program run is over, I am supposed to save the results(which is basically the source text file AND all updates) in a destination file. This destination file would then serve as the source file when next the program is run. In other words, I want a scenario where my results overwrite the original contents of the source file; implying that my source and destination files are now one, pretty much. How can I do this?