C++ Vector to CSV by adding Comma after each element

Question

vector v;
v.push_back(\"A\");
v.push_back(\"B\");
v.push_back(\"C\");
v.push_back(\"D\");

for (vector::iterator it = v.begin(); it!=v.end()         


        

Answer 1

Loop way:

for (vector::iterator it = v.begin(); it != v.end(); ++it) {
   if (it != v.begin()) cout << ',';
   cout << *it;
}

"Clever" way:

#include 
#include 

if (v.size() >= 2)
   copy(v.begin(), v.end()-1, ostream_iterator(cout, ","));
if (v.size() >= 1)
   cout << v.back();