Span

Use span to create and call a function that adds the values of the following four variables:

int ca[]{2,3,4,5}
std::vector v{1,2,3,4,5};
std::array a{1,2,3,4,5};
int *p = ca;

Solution

#include <span>
#include <vector>

int add(std::span<int> vals) {
    int sum=0;
    for(auto const& val : vals) {
        sum += val;
    }
    return sum;
}


int main() {
    int ca[]{2,3,4,5};
    std::vector v{1,2,3,4,5};
    std::array a{1,2,3,4,5};
    int *p = ca;
    
    add(ca);
    add(v);
    add(a);
    
    add({p,4});
    // or
    add(std::span{p,4});

    return 0;
}

Links

Cpp Reference

int main() { return 0; }