#include <cmath>
#include <iostream>
#include <string>
usingnamespace std;
class Fraction{
private:
int num; // numerator
int den; // denominator
public:
void set(int n, int d)
{num = n; den = d; normalize();}
int getNum()
{return num;}
int getDen()
{return den;}
private:
void normalize(); // converts to standard form
int gcf(int a, int b); // greatest common factor
int lcm(int a, int b); // lowest common denominator
};
int main(){
int a, b;
string str;
Fraction fract;
while (true){
cout << "Enter numerator: ";
cin >> a;
cout << "Enter denominator: ";
cin >> b;
fract.set(a, b);
cout << "Numerator is " << fract.getNum() << endl;
cout << "Denominator is " << fract.getDen() << endl;
cout << "Do again? (Y or N): ";
cin >> str;
if (!(str[0] == 'Y' || str[0] == 'y'))
break;
}
return 0;
}
/* normalize: put fraction into standard form, unique for each mathematically different value
*/
void Fraction::normalize(){
// handle cases involving 0
if (den == 0 || num == 0){
num = 0;
den = 1;
}
// put negative sign in numerator only
if (den < 0){
num *= (-1);
den *= (-1);
}
// factor out GCF from numerator and denominator
int n = gcf(num, den);
num /= n;
den /= n;
}
/* greatest common factor
*/
int Fraction::gcf(int a, int b){
if (b == 0)
return abs(a);
elsereturn gcf(b, a % b);
}
/* lowest common multiple
*/
int Fraction::lcm(int a, int b){
int n = gcf(a, b);
return a / n *b;
}
How do you use the *, and can you explain how to use them for something other than *x=&y which as far as I know is the same as x=y.
Pointers seem to be far beyond my natural mental comprehension limitations.
% modulo
divides two numbers and returns the remainder
nd i have no clue what you're asking in your second post.
btw (to the person who will help me) the program runs if i take out the absolute value function. [and i know the program does nothing useful.. for now]
