Why x<size is used & explain how the program works

Question

#include <iostream>
using namespace std;

void printArray(int arr[], int size) {
for(int x=0; x<size; x++) {
cout <<arr[x]<< endl;
}
}

int main() {
int myArr[3]= {42, 33, 88};
printArray(myArr, 3);
}

Answer 1

in c / c++ array length is not specific, if we go beyond its range it does not give any error.
thus the given function printArray() needs the size of array.

Answer 2

In short
there is problem on get length of that array
So we need to use "size"

Answer 3

This isn't the best code. Int size seems to be the number of values in the array you are testing; however, it would be better if the function dynamically detected how many values there were, perhaps using ARRAY_SIZE().

x<size is used here to tell the loop to stop at the last array key--so the loop prints each array value on a new line.