Write a Swift program to accept two integer values and return true if one is negative and one is positive. Return true only if both are negative.

func test_num(x: Int, y: Int) -> Bool {
if x > 0 && y < 0
{
return true
}
else if x < 0 && y > 0
{
return true
}
else if x < 0 && y < 0
{
return true
}
else
{
return false
}
}

print(test_num(x:12, y:-5))
print(test_num(x:-12, y:5))
print(test_num(x:-12, y:-5))
print(test_num(x:12, y:5))