What are some examples of good comments in C++?

What are some examples of good comments in C++?

Good comments in C++ should be clear and concise. For example:

1. // Initialize the counter to zero
2. // Check if the input is valid before processing
3. /* This function calculates the factorial of a number */

These comments explain the purpose of the code without being overly verbose.

Can you give me more detailed examples?

Sure! Here are a few more detailed examples:

1. // This loop iterates through the array to find the maximum value.
2. /* The following function sorts an array using the quicksort algorithm, which has an average time complexity of O(n log n). */
3. // Ensure that the pointer is not null before dereferencing to avoid segmentation faults.

What about comments for complex algorithms?

For complex algorithms, comments should explain the logic and steps involved. For example:

/* Dijkstra's algorithm implementation:

1. Initialize distances from the source to all vertices as infinite.
2. Set the distance to the source itself as 0.
3. Use a priority queue to explore the nearest vertex.
4. Update the distances of adjacent vertices accordingly. */