Console-supermarket payment system source code

Namespace Supermarket payment function
{

 Class Program
{
 Static   Void Main ( String [] ARGs)
{
 //  100 off for Members over yuan, off for non-members  
 Console. writeline ( "  Welcome to [automatic payment for suguo supermarket]  " );
Console. Write ( "  Enter your sales amount:  " );

 String Jine = console. Readline (); //  The string accepts the amount  
              Double Jine1 = convert. todouble (jine ); //  Convert to double type  
 

Console. Write ( " If you are a member of this store, enter (y/N ):  " );
 String VIP = console. Readline (); //  Accept  
 
 Double Result; //  Final payment amount  
 Result = pay (jine1, VIP ); //  Define a function so that the final payment amount can call this function  
 


If (Result> 0 )
{
Console. writeline ( "  Amount Payable: {0}  " , Result );
Console. writeline ( "  Thank you!  " );
}

 If (Result < 0 )
{
Int Status = 3 ; //  Define a status value. If you want to use the for statement to execute a maximum of three times, if you enter an error three times, the system will prompt "Use it later! "  
                  For ( Int I = 0 ; I <= status; I ++)
{
Console. Write ( "  The amount you entered is incorrect. Please enter it again:  " );
Jine = console. Readline ();
Jine1 = convert. todouble (jine );
Console. Write ( "  If you are a member of this store, enter (y/N ):  " );
VIP = console. Readline ();
 If (Jine1 < 0 )
{
Console. writeline ( "  The amount you entered is incorrect!  " );
Console. writeline ("  You have {0} remaining opportunities.  " , Status-I- 1 );
 Continue ;
}
 If (Jine1> = 0 )
{
Result = pay (jine1, VIP );
Console. writeline ( "  Amount Payable: {0}  " , Result );
Console. writeline ( "  Thank you!  " );
 Break ;
}
}

}

}






 //  The following are functions:  
 
 Static  Double Pay ( Double Money, String VIP)
{
 Double Pay = 0 ; //  Define an initial value: the initial amount is 0  
 



 If (VIP = "  Y  " | VIP = " Y  " ) //  Yes Member  //  If the member executes the following statement:  
 {
 If (Money> = 100 )
{
Pay = money * 0.8 ;
 Return Pay;
}

If (Money < 100 & Amp; Money & gt; = 0 )
{
Pay = money;
 Return Pay;
}



 If (Money < 0 ) //  Prevent super exceptions  
 {


Pay = money;
 Return Pay;
}


}


 If (VIP = "  N  " | VIP = "  N  " ) //  If you are not a member, execute the following statement:  
 {
If (Money> = 100 )
{
Pay = money * 0.9 ;
 Return Pay;
}

 If (Money < 100 & Amp; Money & gt; = 0 )
{
Pay = money;
 Return Pay;
}

 If (Money < 0 )
{
Pay = money;

 Return Pay;
}
}

 Return Pay;
}
}
}