Adding values from an array

[Kronus]

How would one add each value from an array? I'm working from a string but I was wondering if there was a way to loop through the string and add each value. This is what I have so far:

#include <iostream>
#include <cmath>
#include <string>

int main() {
	std::string numbers;
	int sum;
	int count;

	std::cout<< "Enter a series of numbers: ";
	std::cin>>numbers;

	int iNumbers[numbers.length()];
	for(int i = 0; i < numbers.length(); i++) {
		for(int j = 0; j < numbers.length(); j++) {
			numbers[i-0] = iNumbers[j];
		}
		while(sum < j) {
				sum = iNumbers[j] + iNumbers[j + 1];
	}
		std::cout<< " Sum: " << sum;
	}
}

Any thoughts/ideas?

[MiiNiPaa]

I presume, you need to sum all digits in string.

unsigned sum(0);
for(char c: numbers)
    sum += (c - '0');

ot without C++11:

unsigned sum(0);
for(int i = 0; i < numbers.size(); ++i)
    sum += numbers[i] - '0';

[Mauricioien]

i have no any IDEA....

[vlad from moscow]

#include <numeric>
int sum = std::accumulate( numbers.begin(), numbers.end(), 0,
                           []( int acc, char c ) { return ( acc + c - '0' ); } );