What are some examples of do-while loops in C++?

What are some examples of do-while loops in C++?

A do-while loop in C++ executes a block of code at least once before checking the condition. Here's a simple example:

#include <iostream>
using namespace std;

int main() {
    int count = 0;
    do {
        cout << "Count is: " << count << endl;
        count++;
    } while (count < 5);
    return 0;
}

This code will print the count from 0 to 4.

Can you explain how the do-while loop works?

Sure! A do-while loop first executes the code block and then checks the condition. If the condition is true, it repeats the loop. This ensures that the code runs at least once, unlike a regular while loop.

What happens if the condition is false?

If the condition is false, the loop will terminate after the first execution of the code block. For example, if you set the count to 5 initially, the loop won't run at all.

Can you give me another example?

Absolutely! Here's another example that asks for user input:

#include <iostream>
using namespace std;

int main() {
    int number;
    do {
        cout << "Enter a positive number (0 to exit): ";
        cin >> number;
    } while (number != 0);
    return 0;
}

This loop continues to prompt the user until they enter 0.