Write a function in C that takes a string and converts it by swapping it two halves. For example, if the string is "whatever", the result would be "everwhat". If the number of characters is odd, the character in the middle is supposed to be belonging to the right-hand side half. Eg. for the string "EE222", the result would be "222EE". The signature of the function is defined as: void swap_half(char* string);