
Concept explainers
Copying one array to another array:
An array is the variable which stores the same types of data. To copy the data from one array to another, first initialize the two arrays with their respective element sizes.
- Consider one of the arrays is filled with a set of values and the filled array is required to be copied to another array.
- To copy the content of one array to another, assign each element of the array to another by using the equal to (“=”) operator.
- Each element of the array can be referred to by using index numbers of the array.
Example:
Consider the following code which performs the copying of array elements.
// Header file section
#include<iostream>
using namespace std;
// Main function definition
int main()
{
// Declaring the arrays
int list1[5];
int list2[5];
//Declare the variables
int n, i;
/* Prompt the user to enter the number of elements
need to be copied */
cout << "Enter the number of elements need to be copied" << endl;
// Read “n” value from the user
cin >> n;
/* Execute the for loop to include the elements in the list1[]*/
for (i = 0; i < n; i++)
{
cin >> list1[i];
}
// Copying of one array to another
/* Execute the for loop to copy the elements from
list1[] to list2[]*/
for (i = 0; i < n; i++)
{
//Copying each element of the array to another
list2[i] = list1[i];
}
// Print the header
cout << "copied array" << endl;
/* Execute the for loop to print the elements in the
list2[]*/
for (i = 0; i < n; i++)
{
cout << list2[i] << endl;
}
}
Explanation:
Thus, in the above example, the two arrays are first initialized with the elements and then one array is assigned to another array using the equal to “=” operator. But, this equal to operator does not copy the content alone; it is used for assignment.

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