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Hello and welcome to the Golang programming language course.

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In the previous session, we talked about if Alan function and in this session we want to talk about

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the other half empty package concept.

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Error is a function.

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The error, a function in good language, allow us use formatting features to create descriptive error

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messages.

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Error formats, according to the mentioned format, is it and assigns this format of this string to

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a variable.

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This is the error message.

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This function allows you to print customized error messages as per the user's veal and preened into

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council as an error message.

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Moreover, this function is defined under this empty package.

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Here, you'll need to import this empty package in order to use this function.

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Now you can see this syntax.

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Parameters, these function, access to parameters which are illustrated below.

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Format type is extreme.

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This is your error message with placeholder values such as per cent S. Forest Ring and person for an

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integer a three that interface.

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This is either constant variable name used in the code or any inbuilt function and return value.

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It returns the string as a value that satisfies a rule.

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Now, let's go to this school with program to illustrate the uses of it or if function.

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Now, calling it a function of impersonate the string formatting, which is used for printing extracts

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first define a variable like e r common equals from F A. Package B inward or F function and set the

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message.

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Arrows are cute at first and v lowercase and set time dot now.

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Now printing dare go to the next line.

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FP.

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And it all happened

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and set the raw message, reformat the code, save the project and execute the, you know.

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Now we can see the output, and it all happened around IQ and this time.

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Now we were able to get the variables value from using error.

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If function and preened, then we have reached the end of decision.

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I hope you have taken full advantage of decision onto next edition.

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Goodbye.