What are some good C programming practice problems?

What are some good C programming practice problems?

Here are a few practice problems you can try:

1. Write a program to reverse a string.
2. Create a simple calculator.
3. Implement a binary search algorithm.
4. Write a program to find the factorial of a number.
5. Develop a program to check if a number is prime.

Can you explain how to implement the binary search algorithm?

Sure! The binary search algorithm works on sorted arrays. Here's a simple implementation:

int binarySearch(int arr[], int size, int target) {
    int left = 0;
    int right = size - 1;
    while (left <= right) {
        int mid = left + (right - left) / 2;
        if (arr[mid] == target) {
            return mid; // Target found
        }
        if (arr[mid] < target) {
            left = mid + 1; // Search in the right half
        } else {
            right = mid - 1; // Search in the left half
        }
    }
    return -1; // Target not found
}

This function returns the index of the target if found, or -1 if not.

What about the time complexity of binary search?

The time complexity of binary search is O(log n), where n is the number of elements in the array. This is because the algorithm divides the search space in half with each iteration.

Can you suggest more advanced problems?

Absolutely! Here are some advanced C programming problems:

1. Implement a linked list and perform various operations.
2. Create a program to solve the N-Queens problem.
3. Write a program to implement Dijkstra's algorithm for shortest paths.