I need help with these exercises. Thank you for the help. Language C++

Exercise 3 Use the program shell below to implement a program called SumDigits. When completed, progranm SumDigits prompts for and reads a one-digit number, then adds the numbers from zero to the number, inclusive, and prints the sum. Program SumDigits prompts for and reads a one-digit number. // Values between 0 and the digit (inclusive) are summed. #include using namespace std; int main ) int counter// Loop-control variable int sum; int digit; // Running sum cout digit; counterTO BE FILLED IN /TO BE FILLED IN/ while / TO BE FILLED IN TO BE FILLED IN/ cout using namespace std; int main) char letter; int letterCt TO BE FILLED IN/ return 0; Exercise 4. Fill in the body of program CountUC so that the numbe r of uppercase letters on a line of input is printed. your program with the following input and show the result. (Hint: 1. Remember that the ASCII code of letters are in alphabetic order, so an uppercase letter must satisfy letter>=A' && letter:-7, 2. You can use cin.get(letter) to get each character in the line and exit the loop when it's ' '.) Input AbbaDabbaDoo Output Exercise 5. Change program CountUC from Exercise 4 so that the counting stops if the input line contains a digit. Run your program with the following data and show the results Input ABBA1DABBA2Doo Output