Question

How to compare two int arrays with the same length in C

Answer 1

#include <stdio.h>
#include <string.h>
  
int main ()
{
	int arr1[] = {18, 30, 12, 37}; 
	int arr2[] = {18, 30, 12, 37};
	
	if (memcmp(arr1, arr2, sizeof(arr1)) == 0) {
		puts("Equal");
	}
	else {
		puts("Not Equal");
	}

	return 0;
}




/*
run:

Equal

*/

 

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Answer 2

#include <stdio.h>
#include <string.h>
  
int main ()
{
	int arr1[] = {18, 30, 12, 38}; 
    int arr2[] = {18, 30, 12, 37};
     
	int r = memcmp(arr1, arr2, sizeof(arr1));
	
	if (r > 0) {
		puts("arr1 > arr2\n");
	} else if(r < 0) {
		puts("arr1 < arr2\n");
	} else {
		printf("arr1 == arr2\n");
	}

	return 0;
}




/*
run:

arr1 > arr2

*/

 

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