Strings: a. Write a C program to convert a Roman numeral ranging from I to L to its decimalequivalent. b. Write a C program that converts a number ranging from 1 to 50 to Romanequivalent c. Write a C program that uses functions to perform the following operations: i) To insert a sub-string into a given main string from a given position. To delete n Characters from a given position in a given string. d. Write a C program to determine if the given string is a palindrome or not (Spelled same in both directions with or without a meaning like madam, civic, noon, abcba, etc.) e. Write a C program that displays the position of a character ch in the string S or - 1 if S doesn't contain ch. f. Write a C program to count the lines, words and characters in a given text.