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how to get the ascending and descending of 4 integers with out using array,&&,or only using function

+4 votes
asked Nov 8 by Biruk Nigussie (160 points)
#include <iostream>

using namespace std;

void sort4Nums(int,int,int,int,short);

int main()

{

 char tr;

 short option;

 do

 {

  int num1,num2,num3,num4;

  system("cls");

  cout<<"Enter four integers : \n";

  cin>>num1>>num2>>num3>>num4;

  cout<<"How would you like to display the result ? \n";

  cout<<"1. Ascending order \n2. Descending order \n";

  cin>>option;

  switch(option)

  {

   case 1:

    cout<<"Ascending order : \n";

    sort4Nums(num1,num2,num3,num4,1);

    break;

   case 2:

    cout<<"Descending : \n";

    sort4Nums(num1,num2,num3,num4,2);

    break;

   default:

    cout<<"\n Invalid option. \n";

    break;

  }

  cout<<"\nPress Y/y to try again.\n";

  cin>>tr;

 }while(tr=='y' or tr=='Y');

 system("pause");

return 0;

}

void sort4Nums(int n1,int n2,int n3,int n4,short op)

{

 if(n1>=n2)

 {

  if(n2>=n3)

  {

  if(n3>=n4)

  {

   if(op==1)

    cout<<n4<<" => "<<n3<<" => "<<n2<<" => "<<n1;

   else   

    cout<<n1<<" => "<<n2<<" => "<<n3<<" => "<<n4;

  }

  else if(n1>=n4)

  {

   if(op==1)

   cout<<n2<<" => "<<n3<<" => "<<n4<<" => "<<n1;

   else

   cout<<n1<<" => "<<n4<<" => "<<n3<<" => "<<n2;

  }

  else

  {

   if(op==1)

   cout<<n2<<" => "<<n1<<" => "<<n4<<" => "<<n3;

   else

   cout<<n3<<" => "<<n4<<" => "<<n1<<" => "<<n2;

  }

 }

 else if(n1>=n4)

 {

  if(op==1)

  cout<<n4<<" => "<<n3<<" => "<<n1<<" => "<<n2;

  else

  cout<<n2<<" => "<<n1<<" => "<<n3<<" => "<<n4;

 }

 else if(n2>=n4)

 {

  if(op==1)

  cout<<n1<<" => "<<n3<<" => "<<n4<<" => "<<n2;

  else

  cout<<n2<<" => "<<n4<<" => "<<n3<<" => "<<n1;

 }

 else

 {

  if(op==1)

  cout<<n1<<" => "<<n2<<" => "<<n3<<" => "<<n4;

  else

  cout<<n4<<" => "<<n3<<" => "<<n2<<" => "<<n1;

 }

}

}

1 Answer

0 votes
answered Nov 9 by Peter Minarik (63,320 points)

I'm not sure about the restrictions. Maybe it's a special assignment to learn about the std::sort() method?

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