Circular Buffer Read

Code

#include <stdio.h>

typedef struct {
    int buffer[10];
    int head;
    int tail;
    int count;
    int capacity;
} CircularBuffer;

void read_bytes(CircularBuffer *cb, int n) {
    // Your logic here
    
    for (int i = 0; i < n; i++)
    {   int index = cb->tail % cb->capacity; 
        if(i >= cb->count)
            printf("NULL");
        else
        {
            printf("%d", cb->buffer[index]);
            cb->tail = (cb->tail+1) % cb->capacity;
        }
        if(i+1 != n)
            printf(" ");
        
    }
    printf("\nTail: %d", cb->tail);

}

int main() {
    CircularBuffer cb = {
        .buffer = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100},
        .head = 3,
        .tail = 7,
        .count = 6,
        .capacity = 10
    };

    int n;
    scanf("%d", &n);
    read_bytes(&cb, n);

    return 0;
}

Solving Approach