How to swap the adjacent elements in a 1D array?

Question

if 6 elements are there of an array a[i] and;
a[0]=0
a[1]=1
.
.
.
a[5]=5
so I want to swap the elements of array and print it like 1,0,3,2,5,4 (the entry was: 0,1,2,3,4,5)

Answer 1

Use this :
#include <algorithm>

It has a function that allows you to swap to values/elements .
After you include that, you can try this in your main statement :
int arr[]={1, 2};
cout<<arr[0]<<" "<<arr[1]<<endl;
swap(arr[0], arr[1]);
cout<<arr[0]<<" "<<arr[1];

You will see the result.
Basically the function is provides is this :
swap(a,b);
What is does is, it will swap the values of a and b.