C Program to interchange array elements

/*Program to interchange array elements*/
#include<stdio.h>

void main() {
    int A[10] = { 21, 3, 61, 80, 9, 73, 0, 5, 1, 2 }, i, B[10];
    for (i = 0; i < 10; i += 2) {
        B[i] = A[i + 1];
        B[i + 1] = A[i];
    }
    printf("\nOriginal array is: ");
    for (i = 0; i < 10; i++)
        printf("%d  ", A[i]);
    printf("\nInterchanged array is: ");
    for (i = 0; i < 10; i++)
        printf("%d  ", B[i]);
}