Comparison operators

Swift's comparison operators are also derived from C; the reader will doubtless recognize them immediately:

if x == 0 {print("x is equal to zero")} 
if x != 0 {print("x is not equal to zero")} 
if x < 0  {print("x is less than zero")} 
if x > 0  {print("x is more than zero")} 
if x <= 0 {print("x is less than or equal to zero")} 
if x >= 0 {print("x is more than or equal to zero")}