Else, the character is already in upper case.If the character is a lower case letter, we subtract 32 from it.Check if the character is between ‘a’ and ‘z’ i.e. C Program To Convert Uppercase String To Lowercase 4 Ways in C Programs JComments Off C program to convert an uppercase string to lowercase In this article, we will brief in on the multiple ways to convert an uppercase string to lowercase in C programming.Else, the character is already in lower case.If the character is a capital, we add 32 to it.Check if the character is between A and Z i.e.The difference between the first character of uppercase and ASCII code of lower case character is 32, We add 32 to upper case letters in order to convert them to lower case, and we subtract 32 from lower case letters to convert them to upper case.Īlgorithm to convert uppercase to lowercase: Method 1: Changing the ASCII code of all characters It is also given below, as an extra segment. Changing the ASCII code of all characters.Īnother interesting way would be to convert uppercase letters to lower case letters and lower one to upper.In cases, when the whole string needs to be converted to upper case or lower case, we can use these methods for the conversion: Next Smaller Element to Left in an array.
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