Answer:
The programming language is not stated; However, I'll answer your question using C++ programming language.
Comments are used for explanatory purpose
Program starts here
#include<iostream>
#include <string>
using namespace std;
int main()
{
 //Declare Variables
 string firstName, middleName, lastName;
 char firstInitial, middleInitial, lastInitial;
 /*Initialize firstName, middleName and lastName (Replace values with your details)*/
 firstName = "First Name";
 middleName = "Middle Name";
 lastName = "Last Name";
  
 // Get Initials
 firstInitial = firstName.at(0);
 middleInitial = middleName.at(0);
 lastInitial = lastName.at(0);
  
 //Print Results
 cout<<"Lastname: "<<lastName<<endl;
 cout<<"Firstname: "<<firstName<<endl;
 cout<<"Middlename: "<<middleName<<endl;
 cout<<"Last Initial: "<<lastInitial<<endl;
 cout<<"First Initial: "<<firstInitial<<endl;
 cout<<"Middle Initial: "<<middleInitial<<endl;
 return 0;
}