#include <iostream>
using namespace std;
int firstMatchValue = -1;
int array1[] {1, 2, 3};
int array2[] {2, 3, 4};
for (int value1 : array1) {
for (int value2 : array2) {
if (value1 == value2) {
firstMatchValue = value2;
goto stop;
}
}
}
stop:
//firstMatchValue is 2
cout << firstMatchValue;