How to Store Multiple User Inputs into a Vector in C ?

How to Store User Input (cin) into a Vector

In C , the vector container provides a dynamic array that can be used to store user input. However, when attempting to read user input into a vector using cin, you may encounter issues in counting all the entered numbers.

One common issue is that the code is only reading and pushing a single number into the vector. To resolve this, a loop is required to continually pull in integers from cin. Here's the modified code:

<code class="cpp">int main() {
  int input;
  vector<int> V;
  cout << "Enter your numbers to be evaluated: " << endl;

  while (cin >> input)
    V.push_back(input);

  write_vector(V);
  return 0;
}</code>

This loop continues pulling in integers until cin finds EOF or tries to input a non-integer value. Alternatively, you can use a sentinel value to terminate the loop, preventing the input of that specific value:

<code class="cpp">while ((cin >> input) && input != 9999)
    V.push_back(input);</code>

Once all numbers are stored in the vector, the write_vector function can iterate through and print them for further processing.

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