Swift program to demonstrate the unary minus '-' and unary plus '+' operators

import Swift;

var num1=0;
var num2=0;

// Unary '-' operator
num1 = -10;

// Unary '+' operator
num2 = +20;

print("Num1: ",num1);
print("Num2: ",num2);

Output:

Num1:  -10
Num2:  20

...Program finished with exit code 0