printing out the unique numbers

This is a discussion on printing out the unique numbers within the C++ Programming forums, part of the General Programming Boards category; heya, i am making a program that prints out the unique numbers entered, for example if u enter 10 20 ...

  1. #1
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    printing out the unique numbers

    heya, i am making a program that prints out the unique numbers entered, for example if u enter 10 20 10 30 30 it would print : 10 20 30

    this is my code

    Code:
    #include <iostream>
    using std::cout;
    using std::endl;
    using std::cin;
    
    
    /* FUNCTION PROTOTYPES */
    /****************************************************************************/
    void print_Array (int [], int );
    
    /****************************************************************************/
    
    
    int main ()
    {
      const int size = 10;
      int Readin_Array[size] = {0};
      int Final_Array[size]  = {0};
      int temp = 0;
      int controller = 0;
    
    
      cout <<"Please enter 10 numbers.in range 10-100"<<endl;
      for (int x = 0; x<size; x++)
      {
        cout <<"please enter number "<< x+1 <<": ";
        cin  >> temp;
        while (temp > 100 || temp < 10)
        {
          cout <<"the number must be between 10 and 100."<<endl;
          cin >> temp;
        }
        Readin_Array[x] = temp;
      }
    
      for (int x = 0; x<size; x++)
      {
        int Hold = Readin_Array[x];
        int Count = 0;
    
        while (Count <= size )
        {
          if (Final_Array[Count] == Hold )
          {
            controller = 1;
          }
          Count++;
        }
    
        if (controller !=  1)
        {
         
          Final_Array[x] = Hold;
    
        }
    
      }
    
      cout << endl;
      cout <<"Unique numbers:" << endl;
      print_Array (Final_Array,size);
    
    }
    
    
    
    
    
    
    
    
    
    
    
    /* FUNCTION BODIES */
    /****************************************************************************/
    /****************************************************************************/
    void print_Array (int Array[], int size)
    {
      for (int x = 0; x<size; x++)
      {
        cout <<"\t"<<  Array[x] ;
        if (x == 9){cout << endl;}
      }
    }

    there is a problem, i cant get the final_array to be filled. :/ i dont rly know what i have done wrong

  2. #2
    "I Win!" by U. Lose vart's Avatar
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    int controller = 0; should be inside loop :
    Code:
    for (int x = 0; x<size; x++)
      {
         int controller = 0; 
        int Hold = Readin_Array[x];
    also the problem can be in the way how you print the array (the function is not shown here)
    To be or not to be == true

  3. #3
    Registered User
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    Quote Originally Posted by vart
    int controller = 0; should be inside loop :
    Code:
    for (int x = 0; x<size; x++)
      {
         int controller = 0; 
        int Hold = Readin_Array[x];
    also the problem can be in the way how you print the array (the function is not shown here)

    k that worked great y does controller actually needs to be declaired inside the for loop body?

  4. #4
    "I Win!" by U. Lose vart's Avatar
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    Oct 2006
    Location
    Rishon LeZion, Israel
    Posts
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    it should be reinitialized on each iteration
    and because itiis not used outside the loop - it is better to declare it inside the loop

    each var should have smallest possible scope to prevent various errors of using incorrect and not initialized values
    To be or not to be == true

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