sum elements in vector c++

#include <iostream>
#include <vector>

int main() {
    std::vector<int> numbers = {1, 2, 3, 4, 5};
    int sum = 0;

    for (int i = 0; i < numbers.size(); ++i) {
        sum += numbers[i];
    }

    std::cout << "The sum of elements in the vector is: " << sum << std::endl;

    return 0;
}

Explanation:

1. Include necessary libraries:iostream for input/output and vector for using vectors.

2. Define the main function: The program starts executing from here.

3. Create a vector of integers:std::vector<int> numbers = {1, 2, 3, 4, 5}; initializes a vector named numbers with five integers: 1, 2, 3, 4, and 5.

4. Initialize a variable for sum:int sum = 0; declares an integer variable sum and initializes it to zero.

5. Loop through the vector elements:for (int i = 0; i < numbers.size(); ++i) initiates a loop that starts from 0 and iterates up to the size of the vector numbers.

6. Accumulate the sum:sum += numbers[i]; adds each element of the vector numbers to the sum variable.

7. Print the sum:std::cout << "The sum of elements in the vector is: " << sum << std::endl; outputs the calculated sum of the elements in the vector to the console.

8. Return 0:return 0; signifies a successful execution and termination of the program.