Question

Write a C++ program to calculate or implement Checksum using RECURSIVE. Please provide completed and correct code.

Answer 1

A C++ program uses a recursive function to calculate a checksum by summing all the bytes and taking the complement.

Step-by-step explanation:

To write a C++ program that calculates a checksum using recursion, we can sum up all the bytes of data and then take the complement of the sum. The program will define a recursive function that processes each byte of the input data until all data is processed. Here is an example of how such a program might look:

#include
#include

unsigned int checksum_recursive(const std::vector& data, size_t index) {
if (index == data.size()) return 0;
return data[index] + checksum_recursive(data, index + 1);
}

int main() {
std::vector data = {'H', 'e', 'l', 'l', 'o'};
unsigned int sum = checksum_recursive(data, 0);
unsigned int checksum = (~sum) + 1;
std::cout << "Checksum: " << checksum << std::endl;
return 0;
}
In this program, the function checksum_recursive is called with the data vector and an initial index of 0. It recursively sums up the bytes until all bytes are processed.