converting an array of integers to string

Question

If I have an array that looks like

int digits[size] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 4}

I want to remove the leading zeros and to d

Answer 1

To answer your actual question (How to remove the leading zeros?) here a solution without strings:

#include 
#include 
#include 
using namespace std;

int main() {
    std::vector x = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 4};
    // ...or if you insist on the array...
    // int x[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 0, 4};
    // std::vector x = {x,x+15};
    auto it = std::find_if_not(x.begin(),x.end(),[](int i){return i==0;});
    std::vector y{it,x.end()};
    for (auto i : y) std::cout << i << " ";
}

prints:

1 2 3 0 4