Write a class with name "String". Assume, only stdio.h library is included and it is not possible to include any other library. In private section of class there will be a character array (let's say s) and also it is possible to locate functions to this section that you want to use but not asked. In public section there will be five functions, (i) 'set' function will take a character array as parameter and assign it to s (ii) 'print' function will just prints on screen (iii) 'count' function will find and return number of vowels in s (vowels: 1,0, u, e,a). (iv) 'show' function will take an integer as parameter and print a portion of s till that count number of characters which is taken as parameter. (v) postfix -- operator will delete the last character of s