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Bool member 
A double purchase amount=0; 
The amount of double=0; 
A double deal with total=0; 
Console. Writeline (" excuse me, are you a member (y/n) ") 
If (the console. Readline ()=="y") 
{members=true; } 
Else if (the console. Readline ()=="n") 
{members=false; } 
for(int i=1; i<6; I++) 
{
Console. Writeline (" please input the price of the {0} goods: ", I); 
Total amount of purchase +=double. Parse (console. Readline ()); 
} 
If (the total amount of purchase & gt; 
=100){
If (members) 
{
* 0.8 total amount payable=buy; 
Discount amount=total amount of purchase - payments; 
} 
The else 
{
* 0.9 total amount payable=buy; 
Discount amount=total amount of purchase - payments; 
} 
} 
The else 
{
If (members) 
{
* 0.9 total amount payable=buy; 
Discount amount=total amount of purchase - payments; 
} 
The else 
{
Total amount payable=buy; 
Discount amount=total amount of purchase - payments; 
} 
} 
Console. Writeline (" the total amount of purchase: "+ total purchase); 
The amount of the console. Writeline (" : "+ discount amount); 
Console. Writeline (" total payable: "+ cope with total); 

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