Data structure doubt

Question

#include "iostream"
using namespace std;
int main() {
int count;
int a[10] = {};
int b[10] = {};
cin>>count;
cout<<"enter number\n";
for (int i = 0; i <count; i++) {
cin>>a[i];
}
int k = count;
int n = 0;
while (k >= 0 && n <=count) {
b[n] += a[k];
n++;
k--;
}
for (int j = 0; j <= count ; j++) {
printf("%d",b[j]);
}
}
If I run this code it's automatically put zero at last index any one know what's wrong in this code

Answer 1

~ swim ~ thanks lot bro

Answer 2

#include "iostream"
using namespace std;
int main() {
int count;
cout<<"enter number\n";
cin>>count;
cout << count << endl;
int a[count]={};
int b[count]={};
for (int i = 0; i <count; i++) {
cin>>a[i];
}
int k = count;
int n = 0;
while (k >= 0 && n <count) {
b[n] += a[k-1];
n++;
k--;
}
for (int j = 0; j < count ; j++) {
printf("%d",b[j]);
}
}
https://code.sololearn.com/cUanEeI2I9j4/#cpp

Answer 3

No bro if i give 5 number input like 12345 results should be 54321 but it shows 054321 it's automatically put zero

Answer 4

Edward Finkelstein thanks bro