What is the Best Way to Use Namespaces in C++?

[Linda8888]

Homework Statement

Explain what is wrong with the following code fragment(other than missing #include) and write down the change(s) that you will make to fix the problem(s).

Relevant Equations

I'm not sure what does "using" means at the second but I guess it is wrong.

using namespace std;
using vit = vector<string>::iterator;
void print(const vector<string>& s) {
  for(vit it = s.begin(); it != s.end(); ++it ) {
    cout << *it << endl;
  }
}

 

[jedishrfu]

It’s an abbreviation for the vector string iterator data type. It primarily saves the programmer from typing it over and over.

 

[ShayanJ]

using namespace std;
using vit = vector<string>::iterator;
void print(vector<string>& s) {
  for(vit it = s.begin(); it != s.end(); ++it ) {
    cout << *it << endl;
  }
}

 

[jedishrfu]

Thanks @ShayanJ I fixed the OP’s post as well.