When I am checking equality of two strings, is it faster to convert both strings to uppercase first or to convert to lowercase? Does the equality check run faster with uppercase or
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![Use the function toupper() in combination with the .strstr() function to find out whether one string occurs in another, ignoring case. - C String Use the function toupper() in combination with the .strstr() function to find out whether one string occurs in another, ignoring case. - C String](http://www.java2s.com/example/c/string/use-the-function-toupper-in-combination-with-the-.strstr-function--e4fb8.png)