Equality of arrays In c

Question

I have to check equality of two arrays(1-D) with integer elements.

I understand that there is no direct comparison way. So i'm doing basic iteration and checking for equality of each element.

 for ( int i = 0 ; i < len ; i++) {
    // Equality check

What is the most efficient way to test equality of arrays in C ? Can i get away with loops(for ..) somehow ?

Answer 1

Use memcmp function to compare two arrays of equal length.

int a = memcmp(arr1, arr2, sizeof(arr1));
if(!a)
    printf("Arrays are equal\n");
else
    printf("Arrays are not equal\n");