![]() ![]() When an uppercase letter is passed into the tolower() function, it converts it. In this program, the string is converting into upper and lower case using character function toupper and tolower. Let us re-write the above toggleCase() function using pointers. In C, the tolower() function is used to convert uppercase letters to lowercase. You can also use pointers in the toggleCase() function, which is pretty much straightforward and optimal. * Toggle case of each character in given string Printf("String after toggling case: %s", str) Printf("String before toggling case: %s", str) The C standard library does not provide any function for case conversion. Another commonly required string operation is that of converting the case of a given string. #define MAX_SIZE 100 // Maximum string size The strlwr () is string function defined in the string.h header file, which is used to convert all the characters in a String to lower case letters. * C program to toggle case of each character in a string ![]() Inside the loop for each lowercase characters convert it to uppercase and vice versa. ![]() Say the loop structure is while(str != â\0â). String Functions convert case tool is super easy to use To start, paste your text or string of characters into the top text box.
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