How to compare two arrays

You need to compare each element of x[] array with each element in y[] array using 2 loops[^] (second one must be inside first one).

Try!

BTW: Google is your friend!

Smells like homework.  What have you tried?

IMHO, the most efficient way to do this would be to use HashSet<T>.
Sorry, didn't realize this was a C++ question.

/ravi

hope try this

#include <stdio.h>
#define ARY_SIZE 10
 
int main (void)
{
//Local Declarations
    int numbersA[ARY_SIZE];
    int numbersB[ARY_SIZE];
    int i;
    int j;
 
//Statements
    printf("Please Enter 10 Integers For Array A\n");
    for (int i = 0; i < ARY_SIZE; i++)
        scanf("%d", &numbersA[i]);
     
    printf("\nPlease Enter 10 Integers For Array B\n");
    for (int j = 0; j < ARY_SIZE; j++)
        scanf("%d", &numbersB[j]);
     
    for (int i = 0; i < ARY_SIZE; i++)
       {
        for (int j = 0; j < ARY_SIZE; j++)
            {
            if (numbersA[0] == numbersB[0])
                return true;
            }
        }
    return 0;
}

int main()
{
int n1,n2;
int*ptr;
int*aptr;
cout<<"Please Inter Size Of Array A:";
cin>>n1;
cout<<"Please Inter Size Of Array B:";
cin>>n2;

ptr=new int [n1];

for(int i=0;i<n1;i++)>
{
cout<<"Please Inter Element Array A"<<i<<" : "<<endl;
cin>>*(ptr+i);
}

aptr=new int [n2];

for(int j=0;j<n2;j++)>
{
cout<<"Please Inter Element Array B"<<j<<" : "<<endl;
cin>>*(aptr+j);

}
for(i=0;i<n1;i++)>
{
for (j=0;j<n2;j++)>
{

if (*(ptr+i)==*(aptr+j))
cout<<"Element"<<i<<"A="<<"Element"<<j<<"B"<<endl;
}
}

return 0;
}

I would use use one for loop than to increment the rand[] than the single value to a function with the user array compare the rand in a for loop in different function and than return the counter if it evaluates as a match it will increment. It really the same as what your doing but your setting the counter to zero again on the nested for loop which won't work. I only separate the for loops as preference your way should work if you don't set the counter to zero again within the nested for loop.

int counter (int ran[],int user[])
{
    int counter=0;
     for (int i=0;i<5;++i)
        {
            int counter=0;
            for (int j=0;j<5;++j)
            {

              if (ran[i] == user[j])
              counter ++;

            // cout << "There are" counter << "matches";
            //cout << counter << ' ';

            // Return an error, or print "error there is a duplicate value" etc
         }
    return counter;
}