MHB Determining the size of a vector

[needOfHelpCMath]

May anyone help guide and explain this program for meAssign the size of vector sensorReadings to currentSize.

#include <iostream>
#include <vector>
using namespace std;

int main() {
   vector<int> sensorReadings(4);
   int currentSize = 0;

   sensorReadings.resize(10);

     
       currentSize = 10;

   cout << "Number of elements: " << currentSize << endl;

   return 0;
}

Testing sensorReadings.resize(10)
Your value: 10
✖ Testing sensorReadings.resize(2)
Expected value: 2
Your value: 10

 

[I like Serena]

May anyone help guide and explain this program for me

Assign the size of vector sensorReadings to currentSize.

Hi needOfHelpCMath! (Smile)

We can retrieve the size of vector sensorReadings with [m]sensorReadings.size()[/m].
That's what we need instead of assigning a constant value of $10$.