change array size

[leesho]

i have this code which input 3 numbers into ascending order. i know make it 10 i just change the array size but then it is only ascending the numbers that were inputing that are under 10. how can i change it so it's any number.

#include <iostream>
#include <conio.h>

using namespace std; 

int  main ()
{   int x;
        
        int array [3], t;
        for (x=0; x<3; x++)
        {
        cout << "Enter integer number: " << endl; 
        cin >> array[x]; 
        }
        for (x=0; x<3; x++)
        {
                for (int y=0; y<2; y++)
                {
                        if(array[y]>array[y+1])
                        {
                t=array[y];
                array[y]=array[y+1];
                array[y+1]=t;
                        }
                }
        }
        cout << "The integers in ascending order are : ";
        for (x=0;x<3;x++)
        {  
           cout <<"\n";
           cout <<array[x];
           cout << "\n";
        }
     system ("pause");
        return 0;  
        }

[s_sridhar]

May I know what exactly you changed?

[leesho]

just

int array [3], t;

to

int array [10], t;

[s_sridhar]

And you didn't change the ones in the loops??

[amrith92]

I think you're looking to dynamically implementing your arrays. See this for more information. There's also a few points about your code:

1. Your bubble-sort can be improved with a flag to reduce the number of iterations required to sort it. See this for an example.

2. Your code could be much simpler if you use STL classes like std::vector 3. NEVER use system("pause"); . Use std::cin.get(); instead. See this for more information.

Hope this helped :)

[mrnutty]

When you change the array size, change the bounds on the for loop as well. Thats why
you should use integer constants :

const int MAX_SIZE = 10;
int inputArray[MAX_SIZE] = {0}; //initialize all elements to 0

 for(int i = 0; i < MAX_SIZE; ++i){
  cin >> inputArray[i];
 }

 //sort array using bubble sort
 for(int i = 0; i < MAX_SIZE; ++i){
   for(int j = 0; j < MAX_SIZE; ++j){
       if(inputArray[i] > inputArray[j]) std:::swap(Array[i],Array[j]);
    }
  }

  //print Array
 for(int i = 0; i < MAX_SIZE; ++i){
   cout << inputArray[i] << " ";
 }

Now if you want to change the array size, all you have to do is change only MAX_SIZE
to a different number.