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.exe
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 Posted: Sun Apr 17, 2011 10:53 am Post subject: fraction |
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what is the correct data type for fraction? in c++ 
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Slugsnack
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| Posted: Sun Apr 17, 2011 11:25 am Post subject: |
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| there isn't. the closest you can get with basic types is float or double. if you really must use fractions you can make your own class. define 2 properties of that class object which are denominator and numerator.
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pkedpker
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| Posted: Tue Apr 19, 2011 11:16 pm Post subject: |
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you can use a struct.
| Code: |
#include <iostream>
struct Fraction
{
int nNumerator;
int nDenominator;
};
void Multiply(Fraction sF1, Fraction sF2)
{
using namespace std;
// Don't forget the static cast, otherwise the compiler will do integer division!
cout << static_cast<float>(sF1.nNumerator * sF2.nNumerator) /
(sF1.nDenominator * sF2.nDenominator);
}
int main()
{
using namespace std;
// Allocate our first fraction
Fraction sF1;
cout << "Input the first numerator: ";
cin >> sF1.nNumerator;
cout << "Input the first denominator: ";
cin >> sF1.nDenominator;
// Allocate our second fraction
Fraction sF2;
cout << "Input the second numerator: ";
cin >> sF2.nNumerator;
cout << "Input the second denominator: ";
cin >> sF2.nDenominator;
Multiply(sF1, sF2);
return 0;
}
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Slugsnack
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| Posted: Wed Apr 20, 2011 2:15 am Post subject: |
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| if you're going to use c++ then you should make it a class. your multiply method is also misleading. the expected behaviour is that it modifies the first operand whereas yours just makes an output.
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atom0s
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| Posted: Wed Apr 20, 2011 5:11 am Post subject: |
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| Slugsnack wrote: | | if you're going to use c++ then you should make it a class. your multiply method is also misleading. the expected behaviour is that it modifies the first operand whereas yours just makes an output. |
The code is just taken from:
http://www.learncpp.com/cpp-tutorial/47-structs/
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Jani
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| Posted: Wed Apr 20, 2011 2:48 pm Post subject: |
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Yeah, write your own class as an exercise. It's actually a good exercise. Write all the overloaded operators with proper friendships etc.
I bet many of the "C++ coders" of this forum can't even properly implement this class.
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Cheat Engine User
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| Posted: Wed Apr 20, 2011 3:17 pm Post subject: |
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| And if you REALLY want to hit the right spot, go for some fixed point instead of floating point. It's actually a nice exercise to create a struct or class that does this.
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.exe
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| Posted: Tue Apr 26, 2011 8:01 am Post subject: |
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| thanks guys!
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