#include <stdio.h>

double matrix_elem_sum(double* matrix, int n, int* lengths) {
    // gesamtlaenge der Matrix ermitteln
    int length = 1;
    for (int i = 0; i < n; i++) {
        length *= lengths[i];
    }
    
    // iterativ alle Elemente der Matrix addieren
    double sum = 0;
    for (int i = 0; i < length; i++) {
        sum += matrix[i];
    }

    return sum;
}

int main(void) {
    
    double matrix2d[3][2] = { {111, 112}, {121, 122}, {131, 132} };
    int lengths2d[2] = {3, 2};

    double matrix3d[2][3][4] = {
        { {111, 112, 113, 114}, {121, 122, 123, 124}, {131, 132, 133, 134} },
        { {211, 212, 213, 214}, {221, 222, 223, 224}, {231, 232, 233, 234} }
    };

    int lengths3d[3] = {2, 3, 4};

    

    return 0;
}