Week 5 Project 2

[Cpp]
/*
* Copyright and version Declaration of the program
* Copyright (c) 2012, a student from the computer College of Yantai University
* All rightsreserved.
* File name: cf. cpp
* Author: Wang liqiang
* Completion date: January 1, April 3, 2013
* Version: v1.0
* Input Description: omitted
* Problem description: omitted
* Program output: omitted
*/
# Include <iostream>
# Include <Cmath>
Using namespace std;
Int gcd (int m, int n );
Class CFraction
{
Private:
Int nume; // molecule
Int deno; // denominator
Public:
CFraction (int nu = 0, int de = 1); // constructor, initialized
Void set (int nu = 0, int de = 1); // set the value.
Void input (); // in the format of "nu/de", such as "5/2"
Void simplify (); // simplification (removing the public factor from the numerator denominator)
Void amplify (int n); // enlarge n times, for example, 2/3 to 5 times to 10/3
Void output (int style = 0 );
};

CFraction: CFraction (int nu, int de) // constructor, used for initialization
{
If (de! = 0)
{
Nume = nu;
Deno = de;
}
Else
{
Cerr <"initialization error, program exited \ n ";
System ("pause ");
Exit (0 );
}
}

Void CFraction: set (int nu, int de) // set the value.
{
If (de! = 0) // If not, the value change operation is invalid.
{
Nume = nu;
Deno = de;
}
}

Void CFraction: input () // follow the format of "nu/de", for example, "5/2"
{
Int nu, de;
Char c;
While (1)
{
Cout <"input score (m/n ):";
Cin> nu> c> de;
If (c! = '/')
Cout <"incorrect input format! \ N ";
Else if (de = 0)
Cout <"the denominator cannot be zero! \ N ";
Else
Break;
}
Nume = nu;
Deno = de;
}

// Simplify the score so that the denominator does not have a common factor
Void CFraction: simplify ()
{
Int n = gcd (deno, nume );
Deno/= n; // simplified
Nume/= n;
}

// Calculate the maximum public approx. of m and n
Int gcd (int m, int n) // this function can be defined as a member function of the class or a general function.
{
Int r;
If (m <n) {r = m; m = n; n = r ;}
While (r = m % n) // evaluate the maximum public approx. of m, n
{
M = n;
N = r;
}
Return n;
}

Void CFraction: amplify (int n) // enlarge n times, for example, 2/3 to 5 times to 10/3
{
Nume * = n;
}
// Output score: Take/6 as an example.
// If the style is 0, 8/6 is output as is;
// When the style is 1, the output format is simplified to 4/3;
// When the style is 2, the output format is 1 (1/3), indicating one or more 1/3;
// When the style is 3, it is output in decimal form, for example, 1.3333;
Void CFraction: output (int style)
{
Int n;
Switch (style)
{
Case 0:
Cout <"unchanged:" <nume <'/' <deno <endl;
Break;
Case 1:
N = gcd (deno, nume );
Cout <"simplified form:" <nume/n <'/' <deno/n <endl; // output simplified form, not simplified
Break;
Case 2:
Cout <"with score form:" <nume/deno <'(' <nume % deno <'/' <deno <')' <endl;
Break;
Case 3:
Cout <"approximate value:" <nume/double (deno) <endl;
Break;
Default:
Cout <"Default as is:" <nume <'/' <deno <endl;
}
}

Int main ()
{
CFraction c1, c2 (8, 6 );

Cout <"about c1:" <endl;
C1.output (0 );

Cout <"Change c1:" <endl;
C1.set (2, 7 );
C1.output ();

Cout <"input c1:" <endl;
C1.input ();
C1.output (0 );

Cout <"about c2:" <endl;
C2.output (0 );
C2.output (1 );
C2.output (3 );
C2.output (3 );
C2.output ();

Cout <"simplify c2:" <endl;
C2.simplify ();
C2.output (0 );

Cout <"doubles c2:" <endl;
C2.amplify (5 );
C2.output (0 );
C2.output (1 );

System ("pause ");
Return 0;
}

/*
* Copyright and version Declaration of the program
* Copyright (c) 2012, a student from the computer College of Yantai University
* All rightsreserved.
* File name: cf. cpp
* Author: Wang liqiang
* Completion date: January 1, April 3, 2013
* Version: v1.0
* Input Description: omitted
* Problem description: omitted
* Program output: omitted
*/
# Include <iostream>
# Include <Cmath>
Using namespace std;
Int gcd (int m, int n );
Class CFraction
{
Private:
Int nume; // molecule
Int deno; // denominator
Public:
CFraction (int nu = 0, int de = 1); // constructor, initialized
Void set (int nu = 0, int de = 1); // set the value.
Void input (); // in the format of "nu/de", such as "5/2"
Void simplify (); // simplification (removing the public factor from the numerator denominator)
Void amplify (int n); // enlarge n times, for example, 2/3 to 5 times to 10/3
Void output (int style = 0 );
};
 
CFraction: CFraction (int nu, int de) // constructor, used for initialization
{
If (de! = 0)
{
Nume = nu;
Deno = de;
}
Else
{
Cerr <"initialization error, program exited \ n ";
System ("pause ");
Exit (0 );
}
}
 
Void CFraction: set (int nu, int de) // set the value.
{
If (de! = 0) // If not, the value change operation is invalid.
{
Nume = nu;
Deno = de;
}
}
 
Void CFraction: input () // follow the format of "nu/de", for example, "5/2"
{
Int nu, de;
Char c;
While (1)
{
Cout <"input score (m/n ):";
Cin> nu> c> de;
If (c! = '/')
Cout <"incorrect input format! \ N ";
Else if (de = 0)
Cout <"the denominator cannot be zero! \ N ";
Else
Break;
}
Nume = nu;
Deno = de;
}
 
// Simplify the score so that the denominator does not have a common factor
Void CFraction: simplify ()
{
Int n = gcd (deno, nume );
Deno/= n; // simplified
Nume/= n;
}
 
// Calculate the maximum public approx. of m and n
Int gcd (int m, int n) // this function can be defined as a member function of the class or a general function.
{
Int r;
If (m <n) {r = m; m = n; n = r ;}
While (r = m % n) // evaluate the maximum public approx. of m, n
{
M = n;
N = r;
}
Return n;
}
 
Void CFraction: amplify (int n) // enlarge n times, for example, 2/3 to 5 times to 10/3
{
Nume * = n;
}
// Output score: Take/6 as an example.
// If the style is 0, 8/6 is output as is;
// When the style is 1, the output format is simplified to 4/3;
// When the style is 2, the output format is 1 (1/3), indicating one or more 1/3;
// When the style is 3, it is output in decimal form, for example, 1.3333;
Void CFraction: output (int style)
{
Int n;
Switch (style)
{
Case 0:
Cout <"unchanged:" <nume <'/' <deno <endl;
Break;
Case 1:
N = gcd (deno, nume );
Cout <"simplified form:" <nume/n <'/' <deno/n <endl; // output simplified form, not simplified
Break;
Case 2:
Cout <"with score form:" <nume/deno <'(' <nume % deno <'/' <deno <')' <endl;
Break;
Case 3:
Cout <"approximate value:" <nume/double (deno) <endl;
Break;
Default:
Cout <"Default as is:" <nume <'/' <deno <endl;
}
}
 
Int main ()
{
CFraction c1, c2 (8, 6 );
 
Cout <"about c1:" <endl;
C1.output (0 );
 
Cout <"Change c1:" <endl;
C1.set (2, 7 );
C1.output ();
 
Cout <"input c1:" <endl;
C1.input ();
C1.output (0 );
 
Cout <"about c2:" <endl;
C2.output (0 );
C2.output (1 );
C2.output (3 );
C2.output (3 );
C2.output ();
 
Cout <"simplify c2:" <endl;
C2.simplify ();
C2.output (0 );
 
Cout <"doubles c2:" <endl;
C2.amplify (5 );
C2.output (0 );
C2.output (1 );
 
System ("pause ");
Return 0;
}