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multiset insert() function in C++ STL
The multiset insert() function in C++ STL which insert elements in the multiset container from a position to another position from one multiset to a different multiset.
List of functions used:
- ms.size() = Returns the size of multiset.
- ms.insert() = It is used to insert elements to the multiset.
Example Code
#include <iostream>
#include <set>
#include <string>
#include <cstdlib>
using namespace std;
int main() {
multiset<int> ms;
multiset<int>::iterator it, it1;
int c, i;
while (1) {
cout<<"1.Size of the Multiset"<<endl;
cout<<"2.Insert Element into the Multiset"<<endl;
cout<<"3.Display Multiset"<<endl;
cout<<"4.Exit"<<endl;
cout<<"Enter your Choice: ";
cin>>c;
switch(c) {
case 1:
cout<<"Size of the Multiset: "<<ms.size()<<endl;
break;
case 2:
cout<<"Enter value to be inserted: ";
cin>>i;
if (ms.empty())
it1 = ms.insert(i);
else
it1 = ms.insert(it1, i);
break;
case 3:
cout<<"Elements of the Multiset: ";
for (it = ms.begin(); it != ms.end(); it++)
cout<<*it<<" ";
cout<<endl;
break;
case 4:
exit(1);
break;
default:
cout<<"Wrong Choice"<<endl;
}
}
return 0;
}Output
1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 1 Size of the Multiset: 0 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 2 Enter value to be inserted: 1 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 2 Enter value to be inserted: 2 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 2 Enter value to be inserted: 4 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 2 Enter value to be inserted: 6 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 2 Enter value to be inserted: 7 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 3 Elements of the Multiset: 1 2 4 6 7 1.Size of the Multiset 2.Insert Element into the Multiset 3.Display Multiset 4.Exit Enter your Choice: 4 exit status 1
Updated on: 30-Jul-2019
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