Q:

Ruby program to check a string starts with a specified substring

belongs to collection: Ruby Strings Programs

YasminRadwan26
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2022-07-21
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In this program, we will create three strings then we will check a given string starts with a specified substring using the start_with?() function and return a Boolean value.

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YasminRadwan26
2022-07-21
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Program/Source Code:

The source code to check a string starts with a specified substring is given below. The given program is compiled and executed successfully.

# Ruby program to check a string starts 
# with a specified substring

str = "Hello, how are you";
substr1 = "Hello";
substr2 = "hello";

if str.start_with?(substr1)
    print "String 'str' is start with sub-string 'substr1'\n";
else
    print "String 'str' is not start with sub-string 'substr1'\n";
end

if str.start_with?(substr2)
    print "String 'str' is start with sub-string 'substr2'\n";
else
    print "String 'str' is not start with sub-string 'substr2'\n";
end

Output:

String 'str' is start with sub-string 'substr1'
String 'str' is not start with sub-string 'substr2'

Explanation:

In the above program, we created three strings str, substr1, substr2. Then we used start_with?()  function to check a string start with a specified substring or not and printed the appropriate message.

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