This is why we need memcpy() in C

memcpyUse.c

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

int main(){
    int *A = (int *) malloc(10 * sizeof(int));
    int *B = (int *) malloc(10 * sizeof(int));
    
    int k;
    scanf("%d", &k);
    for (int i = 0; i < k; i++){
        scanf("%d", &A[i]); 
        getchar();
    }

    memcpy(B, A, k * sizeof(int));
    for(int i = 0; i < k; i++){
        printf("%d ", B[i]);
    }printf("\n");

    B[0] = 6;
    B[1] = 6;
    B[2] = 6;

    printf("A:\n");
    for(int i = 0; i < k; i++){
        printf("%d ", A[i]);
    }printf("\n");
    printf("\n");

    printf("B:\n");
    for(int i = 0; i < k; i++){
        printf("%d ", B[i]);
    }printf("\n");
    printf("\n");

    return 0;
}