#include <stdio.h>
#include <stdlib.h>

int main(void){
	int a[] = {1,2,3};
	int b[3];
	int len = sizeof(a)/sizeof(a[0]);
    memcpy(b, a, len);
    for (int i = 0; i < 3; ++i){
        printf("%d ", b[i]);
    }
    printf("\n");
    return 0;

}