16: Write a C program to do the following operations: (a) Find the length of a string without using the inbuilt string length function of C.
(b) Copy one string to another without using the inbuilt string copy function of C.
(c) Concatenate two strings without using the string concat function of C.
(d) Check whether two strings are the same without using the string comparison function of C.
(e) Reverse a string without using the string reversal function of C.
Solution 16: Let us write the programs one by one.
(a) The length of a string