Question

(Please do in C++)

Implement a Queue using a vector or the STD ::queue:: class Note the difference in what it takes to implement using a char[] array vs a vector or the STD ::queue:: class The user will input a string and the program will return the string with each letter in the string duplicated. Displaying correct Queue implementation. Utilize the conventional methods as needed.

Please input String: happy

hhaappyy

Answer 1

#include <iostream>
#include <queue>
  
using namespace std;
void show_queue(queue <char> q) //defination of function
{
queue <char> g = q;
while (!g.empty()) //check until queue is empty
{
cout <<g.front(); //print the element of queue
g.pop(); //removing the element as their order of insertion based on fifo
}
cout << '\n';
}
int main()
{
  
queue <char> qu; //declaration of queue
string str;//declare a string
cout<<"Please input String:";
cin>>str;//user input string
for(int i=0;i<str.size();i++)
{
qu.push(str[i]);//insert the emement in queue
qu.push(str[i]);//insert the element in queue
}
show_queue(qu);//calling a function to display queue element
}