Ruby Program to Get the Successor of an Integer Number Using Library Function

Ruby program to get the successor of an integer number using library function

# Ruby program to get the successor of an 
# integer number using library function

num1 = 20;
num2 = -23

print "Successor of num1: ",num1.succ(),"\n";
print "Successor of num2: ",num2.succ(),"\n";

Successor of num1: 21
Successor of num2: -22