C++ bitwise << operator

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C++

Hi all, I am new to C++ even to this website and I was trying to make a console calculator with arithmetic operators and some bitwise operators too.
So everyone knows 2 << 4 = 32.
But when I run the following code:

cout << 2 << 4 << endl;

It gives me 24 not 32.
Why is that


And if you want to see my overall code find it below:

#include <iostream>

using namespace std;

int main() {

  int a, b;
  char o;
  string l = "Answer is: ";
  cout << "Enter First Number: ";
  cin >> a;

  cout << "Enter Second Number: ";
  cin >> b;

  cout << "\nEnter Operation: ";
  cin >> o;

  if (o == '+') 

    cout << l << a + b << endl;
  else if (o == '-')
    cout << l << a - b << endl;

  else if (o == '*') 
    cout << l << a * b << endl;
  
  else if (o == '/') 
    cout << l << a / b << endl;
  
  else if (o == '%')
    cout << l << a % b << endl;

  else if (o == '<') 
    cout << l << 2 << 4 << endl;
  return 0;

}

The code is not very clean, I know
and if you are wondering about the {} it doesn't matter because I tried other simple operator like + or *

What I have tried:

I have tried removing the

endl