Question

{4, 6, 12, 15, 19, 23, 24}  

Write one statement to print out (cout) the first character and the last character of the vector you initialized

Write one statement to insert an integer 9 to myvec between numbers 6 and 12.

in c++

Answer 1

PROGRAM :

#include <iostream>

// <bits/stdc++.h> for STL libraries

#include <bits/stdc++.h>

using namespace std;

int main() {

// initialising vector

vector<int> vect{4, 6, 12, 15, 19, 23, 24} ;

// vector.front() and vector.back() returns first and last element of vector respectively

cout << "First and last element : " << vect.front() << " and " << vect.back() << "\n";

// 9 is to be inserted between 6 and 12 ,thus the index to be inserted is 2

// vector.insert(position,value) inserts the value ate the specified position

vect.insert(vect.begin() + 2 ,9);

for (int x : vect)

cout << x << " ";

cout << "\n";

return 0;

}

OUTPUT: