Merging of two array

Question

12345 678910 12345678910

Answer 1

https://code.sololearn.com/cJ6RjSRvl0vO/?ref=app

Answer 2

#include <algorithm>
...
int a[5], b[5], c[10];
...
copy(a,a+5,c);
copy(b,b+5,c+5);