Tutorial 8 Question 3

#include <iostream>
#define ARRAY_SIZE 5
using namespace std;

bool compare(int x[], int y[], int size);

int main(void)
{
    int a1[ARRAY_SIZE] = {1, 2, 3, 4, 5};
    int a2[ARRAY_SIZE] = {1, 2, 3, 4, 5};
    int a3[ARRAY_SIZE] = {1, 1, 1, 1, 1};

    if ( compare(a1, a2, ARRAY_SIZE) )
        cout<<"Arrays a1 and a2 are equal\n";
    else
        cout<<"Arrays a1 and a2 are not equal\n";

    if ( compare(a1, a3, ARRAY_SIZE) )
        cout<<"Arrays a1 and a3 are equal\n";
    else
        cout<<"Arrays a1 and a3 are not equal\n";

    return 0;
}

bool compare(int x[], int y[], int size)
{
    bool flag= true; // assume 2 arrays are equal

    //version 1
    /* for(int i = 0; i < size; i++)
        if(x[i] ==y[i])
            ; // DO NOTHING SINCE ASSUME 2 ARRAYS ARE EQUAL INITIALLY
        else
            flag = false;
    */

    //version 2
    /*for(int i = 0; i < size; i++)
        if (x [i] != y[i])
            flag = false;
    */

    //version 3
    int i= 0;
    while ( i < size && flag != false)
    {
        if if (x [i] != y[i])
            flag = false;
        i++;
    }

    return flag;

}