c語言：判斷兩個數組是否有相同的元素

#include<stdio.h>
int main()
{
int i = 0;
int j = 0;
int arr1[] = {1,2,3,4,5};
int arr2[] = {1,2,7,4,9};
for (i = 0; i < sizeof(arr1) / sizeof(arr1[0]); i++)
{
for (j = 0; j < sizeof(arr2) / sizeof(arr2[0]); j++)
{
if (arr1[i] == arr2[j])
{
printf("存在相同元素");
break;
}
}
break;
}
return 0;
}