Resize vector countDown to have newSize elements. Populate the vector with integers {newSize, newSize - 1, ..., 1}. Ex: If newSize = 3, then countDown = {3, 2, 1}, and the sample program outputs: #include
#include
using namespace std;
int main() {
vector countDown(0);
int newSize = 0;
int i = 0;
newSize = 3;
STUDENT CODE
for (i = 0; i < newSize; ++i) {
cout << countDown. at(i) << " ";
}
cout << "Go!" << endl;
return 0;
}

Following are the code to the given question:

#include <iostream>//defining header file

#include <vector>//defining header file

#include <numeric>//defining header file

using namespace std;

int main()//main method

{

vector<int> countDown(0);//defing an integer array variable countDown

int newSize = 0;//defing an integer variable newSize that holds a value 0

int i = 0;//defing an integer variable i that initialize with 0

newSize = 3;// //use newSize to hold a value

countDown.resize(newSize,0);// calling the resize method that accepts two parameters

for (i = 0; i < newSize; ++i)//defining a loop that reverse the integer value

{

countDown[i] = newSize -i;//reverse the value and store it into countDown array

cout << countDown.at(i) << " ";//print reverse array value

}

cout << "Go!" << endl;//print message

return 0;

}

Output:

3 2 1 Go!

Explanation:

In the given code inside the main method an integer array "countDown" and two integer variables "newSize and i" is declared that initializes a value that is 0.

In the next step, an array is used that calls the resize method that accepts two parameters, and define a for a loop.

In this loop, the array is used to reverse the value and print its value with the message.

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