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 = 1; i <= n; i++)
    {
        if(i > cb->count)
        {
            printf("NULL");
        }else
        {
            if(cb->tail >= cb->capacity){ cb->tail = 0; }
            printf("%d",cb->buffer[cb->tail++]);
        }
        if(i != 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