sumArray.cpp

#include <iostream>
#include <stdio.h>

using namespace std;

int sumArray(int inputArray[], int arrayCount) {
    if (arrayCount == 1) {
        return inputArray[0];
    }
    else {
        inputArray[0] = inputArray[0] + inputArray[arrayCount - 1];
        int newCount = (arrayCount - 1);
        return sumArray(inputArray, newCount);
    }
}

int main(int argc, char **argv) {
    int ary[3];
    ary[0] = 4;
    ary[1] = 5;
    ary[2] = 7;

    int sum = sumArray(ary, 3);
    printf("%i\n", sum);
}