Common print function for all variants of maps C++ STL - c++

Question

I am brushing up some skills on C++ STL and I wrote a basic insertion/deletion code for maps.
Below is the code.
It is taking some inputs from user and inserting/deleting accordingly.
Very simple code.
But the issue is I have to write separate print functions for every map variant.
Is there anything I can do to make it common as we do in templates?
Any help would be highly appreciated.
#include <iostream>
#include <map>
#include <unordered_map>
using namespace std;
void print(const map<int, string>& mp)
{
cout << "Contents of map: { ";
for(auto& it: mp)
{
cout << it.first << " -> " << it.second << " ";
}
cout << "}" << endl;
}
void print(const multimap<int, string>& mp)
{
cout << "Contents of multi map: { ";
for(auto& it: mp)
{
cout << it.first << " -> " << it.second << " ";
}
cout << "}" << endl;
}
void print(const unordered_map<int, string>& mp)
{
cout << "Contents of unordered map: { ";
for(auto& it: mp)
{
cout << it.first << " -> " << it.second << " ";
}
cout << "}" << endl;
}
void print(const unordered_multimap<int, string>& mp)
{
cout << "Contents of unordered multi map: { ";
for(auto& it: mp)
{
cout << it.first << " -> " << it.second << " ";
}
cout << "}" << endl;
}
int main()
{
map<int, string> mp1;
multimap<int, string> mp2;
unordered_map<int, string> mp3;
unordered_multimap<int, string> mp4;
int value = 0;
string str;
cout << "Inserting..." << endl;
while(value >= 0)
{
cout << "Enter number: ";
cin >> value;
if(value >= 0)
{
cout << "Enter string: ";
cin >> str;
mp1.insert(pair<int, string>(value, str));
mp2.insert(pair<int, string>(value, str));
mp3.insert(pair<int, string>(value, str));
mp4.insert(pair<int, string>(value, str));
}
}
print(mp1);
print(mp2);
print(mp3);
print(mp4);
value = 0;
cout << "Removing..." << endl;
while(value >= 0)
{
cout << "Enter number: ";
cin >> value;
if(value >= 0)
{
// removing by value
mp1.erase(value);
mp2.erase(value);
mp3.erase(value);
mp4.erase(value);
}
}
print(mp1);
print(mp2);
print(mp3);
print(mp4);
return 0;
}

Answer 1

Well, yes, that is, indeed, what templates are used for, right?
template<typename T>
void print(const T& mp)
{
cout << "Contents of map: { ";
for(auto& it: mp)
{
cout << it.first << " -> " << it.second << " ";
}
cout << "}" << endl;
}
This'll work as long as only maps, or reasonable facsimiles thereof, are passed to print() (and both keys and values in the maps have a working << overload). Otherwise, it might become necessary to use SFINAE or C++20 concepts to constrain overload resolution.