Compile error

[mxrx81]

I get three errors that say "must declare a body because it is not marked abstract, extern or partial" This code is suppose to just add, subtract, multiply and divide fractions.

Thanks for any replies.




I know the problem is in this part of the code:

}


public static fraction operator +(fraction lhs, fraction rhs);
public static fraction operator -(fraction lhs, fraction rhs);
public static fraction operator *(fraction lhs, fraction rhs);
public static fraction operator /(fraction lhs, fraction rhs)
{

{

//

Here is the hole code that I have.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication60
{
public class fraction
{
private int numerator;
private int denominator;
public fraction(int numerator, int denominator)


{
this.numerator = numerator;
this.denominator = denominator;
}


public static fraction operator +(fraction lhs, fraction rhs);
public static fraction operator -(fraction lhs, fraction rhs);
public static fraction operator *(fraction lhs, fraction rhs);
public static fraction operator /(fraction lhs, fraction rhs)
{

{

}
int firstProduct = lhs.numerator + rhs.numerator;
int secondProduct = rhs.denominator = lhs.denominator;

return new fraction(
lhs.numerator + rhs.numerator,
lhs.denominator = rhs.denominator
);

}
public override string ToString()
{
String s = numerator.ToString() + "/" +
denominator.ToString();
return s;
}


}

public class Tester
{
public void Run()
{
// addition of fractions
fraction f1 = new fraction(3, 4);
Console.WriteLine("f1: {0}", f1.ToString());
//
fraction f2 = new fraction(2, 4);
Console.WriteLine("f2: {0}", f2.ToString());
//
fraction f3 = f1 + f2;
Console.WriteLine("f1 + f2 = f3: {0}", f3.ToString());
//
//
// Subtraction of fractions
fraction f4 = new fraction(6, 8);
fraction f5 = new fraction(7, 8);

fraction f6 = f4 - f5;
Console.WriteLine(f4 + "-" + f5 + " = " + f6);
//
//
// multiplication of fractions
fraction f7 = new fraction(6, 8);
fraction f8 = new fraction(7, 8);

fraction f9 = f7 * f8;
Console.WriteLine(f7 + "*" + f8 + " = " + f9);
//
//
// Division of fractions
fraction f10 = new fraction(6, 8);
fraction f11 = new fraction(7, 8);

fraction f12 = f10 / f11;
Console.WriteLine(f10 + "/" + f11 + " = " + f12);





}
static void Main()
{
Tester t = new Tester();
t.Run();
}
}
}

[BioPhysEngr]

These lines are the problem:

public static fraction operator +(fraction lhs, fraction rhs);
public static fraction operator -(fraction lhs, fraction rhs);
public static fraction operator *(fraction lhs, fraction rhs);

They declare functions, but then do not provide an implementation of those functions. You must write code saying what those functions do.

Your structure seems to be really confused. The outline for this code should be:

public static fraction operator +(fraction lhs, fraction rhs)
{
    //Put the code to add fractions here
}
public static fraction operator -(fraction lhs, fraction rhs)
{
    //Put the code to subtract fractions here
}
public static fraction operator *(fraction lhs, fraction rhs)
{
    //Put the code to multiply fractions here
}
public static fraction operator /(fraction lhs, fraction rhs)
{
    //Put the code to divide fractions here
}

Does that make sense?

In the future, please also surround your code with [code] and [/code] tags to preserve formatting.