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The While Loop in C++

The while loop allows you to execute a block of code repeatedly as long as a specified condition remains true. It's useful when the number of iterations is not known beforehand.

Syntax of the while Loop

while (condition) {
    // Code to execute
}

Example: Using the while Loop

#include <iostream>

int main() {
    int count = 1;
    while (count <= 5) {
        std::cout << "Count: " << count << std::endl;
        count++;
    }
    return 0;
}

Output:

Count: 1

Count: 2

Count: 3

Count: 4

Count: 5

Explanation: The loop continues to execute as long as count is less than or equal to 5. The variable count is incremented in each iteration.

Key Takeaways

  • The while loop checks the condition before each iteration.
  • If the condition is false initially, the loop body may not execute at all.
  • Ensure the loop has a condition that will eventually become false to prevent infinite loops.
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