Ruby program to calculate the logarithm gamma of the given number

Program/Source Code:

The source code to calculate the logarithm gamma of the given number is given below. The given program is compiled and executed successfully.

# Ruby program to calculate the 
# logarithm gamma of the given number

print "Enter Number: ";
num = gets.chomp.to_i;  
 
result = Math.lgamma(num);

print "Result is: ",result;

Output:

Enter Number: -25
Result is: [Infinity, 1]

Explanation:

In the above program, we read an integer number from the user using gets.chomp.to_i and calculated the logarithm gamma of the input number using Math.lgamma() function printed the result.