Item four-Week 2

#include <iostream>
using namespace Std;
Class CFraction
{
Private
int nume; Molecular
int Deno; Denominator
void simplify (); Simplification (so that numerator denominator has no common factor)
Public
cfraction (int nu = 0, int de = 1); constructor, initialized with
void set (int nu, int de); Change the value
void input (); Enter as "Nu/de" in the form "5/2"
void Amplify (int n); Enlarge n times, such as 2/3 magnification 5 times times 10/3
void output (int style);
Output: Take 8/6 For example, style is 0 o'clock, output is 8/6;
Style is 1 o'clock, the output of the post-simplification form 4/3;
Style is 2 o'clock, Output 1 (1/3) Form, indicating one and one-third;
Style is 3 o'clock, output in decimal form, such as 1.3333;
Default mode 0
};
cfraction::cfraction (int nu, int de)
{
Nume = Nu;
Deno = de;
}
void Cfraction::set (int nu = 0, int de = 1)
{
Nume = Nu;
Deno = de;
}
void Cfraction::input ()
{
cout << "Input in the form of numerator/denominator, as 5/2." << endl << "Please enter:";
Char A;
CIN >> Nume >> a >> deno;
while (A! = '/' | | Deno = = 0)
{
cout << "Input in the form of numerator/denominator, as 5/2." << Endl << "Please re-enter:";
CIN >> Nume >> a >> deno;
}
}
void Cfraction::simplify ()
{
if (Nume = = 0)
cout << "No need to simplify" << Endl;
else if (Nume = = Deno)
{
Nume = = Deno = = 1;
}
Else
{
int r, x = nume, y = Deno;
if (x > Y)
{
R = x;
x = y;
y = r;
}
R = 1;
while (r! = 0)
{
R = y%x;
y = x;
x = r;
}//greatest common divisor for Y
Nume = nume/y;
Deno = deno/y;
}
}
void cfraction::amplify (int n)
{
Nume = Nume*n;
Deno = Deno*n;
}
void cfraction::output (int style=0)
{
if (Nume = = 0)
cout<< "Results for:" << 0;
else if (Nume = = Deno)
{
cout << "results are:" << 1;
}
Else
{
Switch (style)
{
Case 0:cout << "Result:" << nume << '/' << Deno; Break
Case 1:{simplify (); output (); break;}
Case 2:
{
if (Nume <= Deno)
Output (1);
Else
{
int a=0;
while (Nume > Deno)
{
Nume = Nume-deno;
++a;
}
cout << "Result:" << a << "(" << nume << '/' << deno << ")" <<endl;
}
Break
}
Case 3:cout << "Result:" << (Double) Nume/(double) Deno << Endl;
}
}
}
int main ()
{
CFraction A;
A.input ();
int n;
cout << "Please enter magnification:";
CIN >> N;
while (n = = 0)
{
cout << "disallowed operation. Please re-enter the magnification:";
CIN >> N;
}
A.amplify (n);
A.output ();
cout << Endl << "Please enter the form of output you need (default is 0), take 8/6 for example:" << Endl << Endl;
cout << "0. Output 8/6" << Endl;
cout << "1. Post-Export form 4/3" << Endl;
cout << "2. Output 1 (1/3) Form, indicating one and One-third" << Endl;
cout << "3. Output in decimal form, e.g. 1.3333" << Endl;
CIN >> N;
while (n! = 0 && N! = 1 && n! = 2 && n! = 3)
{
cout << "Please select in 0--3:";
CIN >> N;
}
A.output (n);
while (1) {}
}

Item four-Week 2