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

            if(i<n-1)
                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