Write a program with three functions: upper, lower, and reverse. The upper function should accept a pointer to a C-string as an argument. It should step through each character in the string, converting them to uppercase. The lower function, too, should accept a pointer to a C-string as an argument. It should step through each character in the string, converting it to a lowercase. Like upper and lower, reverse should also accept a pointer to a string. As it steps through the string, it should text each character to determine whether it is uppercase or lowercase. If the character is upper case, it should be converted to lowercase. Likewise, if a character is lowercase, it should be converted to uppercase.

Answer1: 1

(java)3. the answer is  (c): x[2] = 12; if x is an array with three elements, the first element has index 0. the second index has index 1. the third and final element has index 2.4. the answer is (d) for (int y : x) { system.out.println (y) ; }this is an example of syntax  of a "for-each loop."for each element in the integer array x, use y to indicate the current element to do some code with it.the other choice, (c) for (int x : y) { system.out.println (y) ; }. in a for-each loop, the variable to the right of the colon is the array variable; the one to the left is the control variable.choices (a) and (b) have invalid syntax.5. the answer is (a)  int x = {1, 2, 3, 5, 10}; you need to indicate that it is an array using []. without using [], you are trying to assign an array to an integer. you need to use int[] to indicate integer array.so choice (a) has incorrect syntax.