Why Do I Get an Error When Using Double Quotes in a Rune Literal in Go?

Mismatched Quotes in Rune Literal

When dealing with rune literals in Go, it's crucial to use single quotes instead of double quotes. The error you're encountering is likely due to the use of double quotes in your format string for the print statement.

In Go, single quotes are reserved for rune literals, which represent single characters represented by Unicode code points. Double quotes and backquotes are used for string literals, which can contain sequences of characters.

According to the error message, your code appears to be using double quotes '%d' to print a rune. To fix this, change the format specifier to "%d" using single quotes.

For example:

fmt.Println(" %d Is even number", a)
fmt.Println( "%d is odd number", a)

By using single quotes, you're explicitly defining a rune literal, which represents a single character, in this case, the placeholder for the integer value 'a'. Using double quotes would result in a string literal, which would not compile correctly.

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