Answer:
Answered below
Explanation:
//Program is written in Java.
public void first three elements(int[] nums){
int I;
//Check if array has up to three elements
if(nums.length > 3){
for(I = 0; I < nums.length; I++){
while (I < 3){
System.out.println(nums [I]);
}
else{
System.out.print("Array does not contain up to three elements");
simplex
half duplex allows for comm in both directions, only not at the same time.