Ruby program to check a string contains a specified substring or not

Program/Source Code:

The source code to check a string contains a specified substring or not is given below. The given program is compiled and executed successfully.

# Ruby program to check a string contains 
# a specified substring or not

str = "Hello India";
substr="India";

if str.include?(substr)
    puts "String contains specified substring.";
else
    puts "String does not contain specified substring.";
end

Output:

String contains specified substring.

Explanation:

In the above program, we created two string variables str, substr that are initialized with "Hello India", "India". Then we used include?() method to check string str contains string substr and print the appropriate message.