return 0;和break； 的区别

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#include <iostream>
using namespace std;

int main()
{
    int a[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    for (int i = 0; i < 10; i++)
    {
        if (a[i] > 5) cout << "mistake" << endl;
        return 0;
        a[i] = a[i] + 1;
    }
    for (int j = 0; j < 10; j++)
    {
        cout << a[j] << " ";
    }
    return 0;
}

#include <iostream>
using namespace std;

int main()
{
    int a[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    for (int i = 0; i < 10; i++)
    {
        if (a[i] > 5) cout << "mistake" << endl;
        break;
        a[i] = a[i] + 1;
    }
    for (int j = 0; j < 10; j++)
    {
        cout << a[j] << " ";
    }
    return 0;
}