write in C

4. Suppose, you are trying to encrypt a string for security purpose. Write a program that can take a string from the user and then create a function that can replace all the vowels to its immediate next letters. Print the modified string. Don't use any. Library function. Use this function: void str_modify(char *p); (6) Example: Input string: i love Bangladesh. Modified string: j lpvf Bbnglbdfsh