Random recursive equal function

equal.cpp

bool equal(int x, int y)
{
    if (x == 0 && y == 0)
    {
        return true;
    }
    x--;
    y--;
    if (x<0 || y<0)
    {
        return false;
    }
    return equal(x, y);
}

equal.py

def equal(x, y):
    if x is 0 and y is 0:
        return True
    x-=1
    y-=1
    if x<0 or y<0:
        return False
    return equal(x, y)

print(f"1 == 1: {equal(1, 1)}")
print(f"2 == 2: {equal(2, 2)}")
print(f"100 == 99: {equal(100, 99)}")
print(f"0 == 0: {equal(0, 0)}")
print(f"0 == 1: {equal(0, 1)}")