C Tutorials

How to Copy an Array in C

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How to Copy an Array in C ?

Answer

To copy an array in C, you can use a loop to copy each element from the source array to the destination array.

✐ Examples

1 Copying an Array using a Loop

In this example,

We create an array named arr1 with elements.
We then create a new array arr2 with the same length as arr1.
We use a loop to copy each element from arr1 to arr2 individually.

C Program

#include <stdio.h>
int main() {
    int arr1[] = {1, 2, 3, 4, 5};
    int arr2[sizeof(arr1) / sizeof(arr1[0])];
    for (int i = 0; i < sizeof(arr1) / sizeof(arr1[0]); i++) {
        arr2[i] = arr1[i];
    }
    printf("Array 1:");
    for (int i = 0; i < sizeof(arr1) / sizeof(arr1[0]); i++) {
        printf(" %d", arr1[i]);
    }
    printf("\nArray 2 (copy of Array 1):");
    for (int i = 0; i < sizeof(arr2) / sizeof(arr2[0]); i++) {
        printf(" %d", arr2[i]);
    }
    return 0;
}

Output

Array 1: 1 2 3 4 5
Array 2 (copy of Array 1): 1 2 3 4 5

Summary

In this tutorial, we learned How to Copy an Array in C language with well detailed examples.