C++ sum a vector of digits

C++ code to sum a vector of digits:

#include <iostream>
#include <vector>
#include <numeric>

int main() {
    std::vector<int> digits = {1, 2, 3, 4, 5};
    int sum = std::accumulate(digits.begin(), digits.end(), 0);
    std::cout << "Sum of the digits: " << sum << std::endl;
    return 0;
}

Explanation:

• Include Libraries:
• #include <iostream>: This library allows input and output operations.
• #include <vector>: This library allows the use of vectors.

• #include <numeric>: This library provides numeric algorithms.

• Main Function:

• The program's entry point is the main function.

• Vector Initialization:

• std::vector<int> digits = {1, 2, 3, 4, 5};: A vector named digits is created and initialized with the values 1, 2, 3, 4, and 5.

• Sum Calculation:

• int sum = std::accumulate(digits.begin(), digits.end(), 0);: The std::accumulate algorithm is used to calculate the sum of the digits in the vector. It takes the range of the vector (digits.begin() and digits.end()) and an initial value of 0.

• Output:

• std::cout << "Sum of the digits: " << sum << std::endl;: The sum of the digits is printed to the standard output.

• Return:

• return 0;: The main function returns 0 to indicate successful program execution. ```