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How to Continuously Store User Input into a Vector
When working with user input, it's common to want to store it in a vector for further processing. However, in the following code snippet, only the first user-provided number is captured:
<code class="cpp">int main() { int input; vector<int> V; cout << "Enter your numbers to be evaluated: " << endl; cin >> input; V.push_back(input); }</code>
To address this issue, the code needs to continuously read user input until a specific condition is met (e.g., the user types a specific character or the end of the input stream is reached).
Solution 1: Using a While Loop with cin
The following code uses a while loop to continuously read integers from the user and push them into the vector:
<code class="cpp">while (cin >> input) { V.push_back(input); }</code>
Solution 2: Using a Sentinel Value with cin
Another approach is to use a sentinel value that signifies the end of input. In this example, we'll use 9999:
<code class="cpp">while ((cin >> input) && input != 9999) { V.push_back(input); }</code>
This loop will continue reading input until the user types 9999 or any other value that renders cin invalid.
By implementing these solutions, you can effectively store all user-provided numbers in a vector for further processing.
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