How to compare two arrays in C programming language?

Question

I want to compare two different arrays which are both int. One array is static and contains numbers from 1 to 10 and second arrays asks user to enter ten different numbers and the program checks which elements from both arrays are equal.

#include <stdio.h>

int main(void) {
    int array1[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    int array2[10];
    int i;

    for (i = 0; i < 11; i++) {
        printf("Enter numbers: ");
        scanf("%d", &array2);
    }

    for (i = 0; i < 11; i++) {
        if (array1[i] != array2[i]) {
            printf("Not equal \n");
        } else {
            printf("They are equal. \n");
        }
    }
}

The program always say not equal even if I enter a number that is equal to a number stored in first array.

Answer 1

scanf("%d", &array2);

You are never updating the index of array2 when getting a value from input.

Try

scanf("%d", &array2[i]);

As for comparing, you can also use memcmp to compare memory:

memcmp(array1, array2, sizeof(array1));